Art.-No. 14230-1200




Forward / Direct
Centered / Soft
Flatwater / Jumping
Down the Line
New School




Weight reduction of a clearly noticeable 200 to 300 g without reducing the thickness of the main panel thus maintaining the well-known durability and longevity!

VTS TAIL outhaul specs

Each sail carries individually defined visual indications for the correct outhaul extension (requires VTS TAIL boom).


No more seam at the leading edge >> 80 g lower weight and no hard spot through overlapping panels


Laminate (100/150 micron) with the lowest stretch and best UV- and puncture resistance on the market


Optional QUICK RIGGING PATCH allows "to the spot" downhaul trimming without even looking to the top (patent pending)


The lightest protector on the market, with integrated downhaul trim indicator slot

Epoxy Battens

Unbreakable Epoxy Battens


Factory calibrated individual batten tensions using a torque wrench

We do care

Duotone Climate Partner
Making the most sustainable Windsurfing products on the market

Sustainability is the most important and pressing challenge of todays mankind to secure a livable mother earth for future generations to come!

Over the last 50 years Windsurfing has developed into a super high tech sport. But let's face it despite what others might tell you with the exception of aluminium booms and extensions Windsurfing products are a "mixture of petrol-based plastic trash". And most times up to 100% of this plastic trash are non-recycled (means "freshly produced") plastics. 
At least as of today there are no eco-friendly substitutes existing offering the minimum requirements necessary to design modern Windsurfing products. Or why do you think no one wants to sail with wooden booms, aluminium masts or stretchy sails made of woven fabrics anymore?
There is only one sustainable way out of this dilemma:

A high performance product that lasts longer and best case can even be put into additional use on the second hand market is the best and only way to conserve the resources of our earth.
Of course light components have a massive impact on the performance and handling of your rig. That's why light weight is always on our briefing list when designing and engineering new products. And DUOTONE products are among or in many cases are the lightest on the market.
But durability and longevity were and will ALWAYS be on top of our priority list. Our industry leading warranty extensions bear witness to this philosophy:
- 2 year unconditional warranty on almost every hardware product (masts, booms and extensions+bases).
- 5 year warranty on 80% of our sails.
On sails we cannot emphasize enough that especially reducing the thickness of the monofilm and the XPly laminate has a radical influence on the longevity/sustainability. Reducing the film thickness by 50% reduces the UV-stability by 70%. Just to shortterm impress magazine testers or customers some brands use up to 70% thinner laminates/films than we do. This is not our understanding of sustainability.

However, since we are fully aware of the importance of sustainability, we cannot simply stop here.
>> Only we have stopped using any plastic for packaging our sails. This saves approx. 5 sqm of plastic film and foam per sail.
>> Only our aluminium products (booms and extensions+bases) are manufactured in a CO2 neutral production facility.
>> Only our aluminium products (booms and extensions+bases) are produced in Germany using 100% European raw materials in order to keep shipping distances (to our manufacture and then to our central warehouse) at a minimum.
>> Only our sail bags are made out of 100% recycled plastic.
>> Only we compensate all carbon emissions caused by our sails during manufacture and transport by supporting a hydropower carbon offset project in Sri Lanka, the country where our sails are produced.

Wanna know more?




The SUPER_HERO has it all: unbeatable handling, neutrality and lowest weight without sacrificing durability We can truly claim that it is the most versatile wave sail with the widest possible wind range that we have ever built. That's why we recommend it unreservedly for all conditions and all rider weights!
But one thing does not change: The new SUPER_HERO remains THE ultimate World Cup Wave sail, which always works optimally in all wave conditions around the globe. Due to the completely neutral and balanced draft position, numerous constructional changes, material optimisations as well as the LIGHT DONE RIGHT CONSTRUCTION, it’s unrivalled neutral feeling in the hands as well as stability and control in every situation makes it is the new favourite sail of PWA Wave triple world champion Victor Fernandez. Why? It rides very smoothly, is as responsive as a 3-batten sail in drift & go conditions and has real bite at the decisive moment. It is direct when pumping, planes early, develops real drive on the wave, is stable and offers this special neutrality for superior control thanks to its centred draft position.
In addition to optimizing performance, reducing the sail weight was a primary goal. With a modified panel layout, reinforcement patches with high-strength high-modulus fibres "Made in Germany" and a new mast sleeve construction, designer Kai Hopf achieves a weight reduction of a clearly noticeable 200 to 300 g! Unlike other brands, the thickness of the fabric and film used has not been reduced and thus the well-known durability of the SUPER_HERO is fully maintained! That's exactly why we call it LIGHT DONE RIGHT CONSTRUCTION.
Performance, dynamics and riding feel the benefit from the changed luff length and a new mast sleeve construction that comes without a seam at the leading edge (ONE PIECE SLEEVE) which allows for millimetre-precise tuning and a refined shape, resulting in a sensitive, more harmonious reflex.
The profile depth has been slightly reduced creating slightly less volume, which simplifies the handling, makes it even easier to control in overpowered conditions and offers maximum control during challenging jumps and in massive swell. Due to the more elastic ONE PIECE SLEEVE, the new profile works extremely efficiently and therefore has not lost propulsion in underpowered conditions.
Every single size of the SUPER_HERO is perfectly tuned and matured down to the last detail. The batten rotation remains buttery smooth even with minimal clew tension and the top works very actively, swallows hard gusts and supports acceleration. Therefore, you can confidently choose a smaller size than many other wave sails.

An important note:
DUOTONE is the only sail brand to offer two different wave sails: the SUPER_HERO with a centered-low draft position and the SUPER_STAR HD with a forward-up draft position. Both sails have their own character, ride differently and convey their own feeling. Therefore, you should not mix sails with different draft positions in your quiver, otherwise you will have to get used to them every time you change sails. By the way, this also applies to mixing DUOTONE sails with sails of other brands. Which sails match together or not can be found here.


The global pandemic continues to cause raw material shortages, restrictions at our manufacturers and greatly extended shipping times, which doesn’t allow a constant and planned flow of deliveries. Therefore please note that although we are doing everything we can to get you the equipment you want, availability is limited, especially at product launches. 





Super_Hero vs. Super_Star

Which one is for you?

Draft position >< Sail characteristic ►video

Both SUPER_HERO and SUPER_STAR are true world cup wave sails. This means that they are designed to work in all kind of conditions from onshore Sylt-, over side-on Pozo-, to down the line Hookipa conditions.
But because of their very different draft position (in both directions, horizontal and vertical) they feel and behave extremely different in your hands. So it really comes down to your personal style and preferences.
And most important to the other kind of wave sails you may already own. Cause you should really make sure that all sails in your quiver have a similar draft position = characteristic (see under SAIL><QUIVER BRAND COMPATIBILITY)

Draft position >< Sail characteristic ►video

Brand Compatibility

Wanna know how other brands masts work with Duotone sails? Or how you should setup your personal sail quiver?

Sail><Mast Brand Compatibility

At DUOTONE we use a Medium Constant Curve for our masts (our bend percentages range between 61-63 bottom and 75-77 top depending on model and length). As this curve sits right in the middle within Constant Curve masts it offers the biggest compatibility of any bend curve. This makes our masts and sails the most compatible on the market.


  1. Challenger Sails, Ezzy, GA (2017 on), Goya, Gun Sails, KA Sails, Loft Sails, Naish Sails, NeilPryde (RDM masts), RRD, S2Maui, Sailloft, Sailworks, Severne (RDM masts, 2014 on)
    >> 80-90% (depending on model and size)
  2. Hot Sails, NeilPryde (SDM masts), Point7, Severne (SDM masts, 2014 on), Simmer Style, Chinook
    >> 70-80% (depending on model and size)
  3. Avanti, Gaastra (until 2016), Maui Sails, Severne (until 2013), Vandal
    >> Not compatible
Sail-Quiver Brand Compatibility

Most customers change their individual sail and mast sizes according to demand and therefore end up owning a quiver with different brands. When building up your personal sail quiver, you should try to combine sails that have a similar feel and behavior. The one decisive factor defining how similar or different one sail feels/behaves to another is the position of the draft, in both levels, vertical (high><low) and horizontal (forward><back). 

  • Freeride and slalom sails from the different brands nowadays feel quite similar since at least the horizontal draft position is forward oriented on nearly every sail today.
  • The biggest difference though you find with wave sails.

Basically there are 2 different kind of wave sails:

  1. Draft centered (= balanced pull on both hands) and low (to keep the sail controllable)
    These sails are the ideal companion for multi-fin boards. Since the balanced pull on both hands makes them super neutral in your hands they shine especially in real down the line conditions. On the other hand they feel very different to modern freeride and slalom sails (which are very forward pulling). So if you are using such draft back/low wave sails only very occasionally as your high wind flat water sail you might be better off with the second type of wave sails. 
  2. Draft forward and up (to still generate enough low end power)
    These sails work on both single- and multi-fin boards. With the forward pulling feeling they are more exiting/direct to sail and have a very similar feeling to modern freeride and slalom sails. In addition they are the ideal choice for side-onshore jumping conditions as the higher and forward oriented draft helps/accelerates rotations in the air (especially forward loops).

So when mixing your quiver with different sails/brands you should try to combine sails which have a similar draft position and thus feeling and behavior.

Just follow these guidelines:

  1. You are looking for a direct feeling wave sail especially for jumping. Or you need a smaller sail to complete your freeride or slalom sails.  Try to get draft forward/up wave sails. Typical examples are:
    Duotone Super_Star / Duotone Duke / NP Zone / NP Combat (until 2018) / NP Atlas / Point7 Salt / Point7 Spy / Severne S1 / Severne Blade
  2. You are looking for a wave sail which is super neutral for down the line riding and very forgiving in nuking gusty conditions. Try to get draft centered/low wave sails. Typical examples are:
    Duotone Super_Hero / GA IQ / GA Manic / Goya Fringe / Goya Banzai / NP Combat (2019 on) / Simmer Tricera / Simmer Blacktip / Simmer Icon
  3. Try to avoid combining draft forward/up- with draft centered/low sails in your quiver as these feel and behave extremely different. 
Sail-Quiver Brand Compatibility

Tech Specs


Min +2 >< Max +4Min +2 >< Max +4Min +2 >< Max +4Min +2 >< Max +4Min +2 >< Max +4Min +2 >< Max +4Min +2 >< Max +4Min +2 >< Max +4Min +2 >< Max +4Min +2 >< Max +4

Duotone design philosophies

Think different

No Dacron luff on wave sails

On modern wave sails you want to have a certain elasticity. The easiest way to „inject“ elasticity into a sail is by using Dacron for the luff panel.
Dacron has 2 disadvantages though:

  1. Dacron is a rather soft woven fabric. Therefore it has a lot of give but similar to your t-shirt it wears out over time. Means your sail is permanently getting fuller in the luff panel. Especially under permanent downhaul tension (e.g. in surf centres) Dacron ages very fast. 
  2. The Dacron material improves the elasticity but due to the soft Dacron material it’s kind of a spongy softness. On the water such sails often have the tendency to become unbalanced on the wave and less precise during jumping. 

Therefore Kai designs his wave sails with non-stretchy XPly luff panels. Instead he tries to implement elasticity into the sail through other design features. Starting with 2022 all no-cam sails feature a mast sleeve made out of one single piece (ONE PIECE SLEEVE) instead of the common two piece construction. Besides saving weight this eliminates the hard spot at the leading edge caused by the overlapping + reinforcement and the seam to connect the two pieces. This way the whole sleeve becomes an integral part of the mast flex/twist. We call this PRECISE ELASTICITY.

Products have to be intuitive and as fast as possible to setup

With the information overkill nowadays no one has the time to read manuals anymore. Therefore we try hard to design our products as intuitive as possilbe to get you onto the water faster than with any other product. No wonder DUOTONE is called the feature world champ.
Here are some examples:

  • VTS 2.0
    The first "guess-free" visual trimming guide to clearly show the correct downhaul tension. Version 2.0 comes with a window in the protector to mark your individual trim once you have found your ideal setting. 
  • HTS 2.0
    By marking the draft position on the sail you immediately know where to position your harness lines. 
    The length of the boom changes with the angle to the mast. Therefore if you move your boom up or down you need to change the length of your boom. As the only brand we take that in consideration by printing 3 different boom lengths onto the clew and boom cutout so that you always know the correct length according to your body/boom height. 
    Instead of leaving you with the time-consuming try and error procedure to find the correct setting we have installed markings on the webbing immediately showing the correct setting. 
  • iROCKET 2.0
    Every batten in a sail requires a different tension. That's why as the only brand we calibrate every single batten at the factory to the correct individual tension using a torque wrench. Since the screws are locked with screw glue you never have to touch them. Just rest asured to always have prefect batten tensions. 
No super thin XPly

Our motto is clear: light is right but only if it doesn't go to costs of durability. 
Our hardware products (booms, masts and extensions) are proven to be the lightest in the industry.
With our sails though we are not the lightest on the market (with the exception of the Super Hero M.Plus). The major reason for this is that we are using (much) thicker XPly laminates than some other brands. 
The factors of puncture resistance, UV weathering resistance and stretch evidently depend ONLY on the thickness of the film used. 
Puncture resistance and stretch have a linear relation to the thickness of the film. Means twice the thickness results in twice the strength against punctures with half the stretch. 
Even more critical is UV resistance since here the relation to the thickness is overproportional. Means half the thickness reduces the UV-longevity by nearly 70%!
Some brands use XPly laminates which are 2/3rd thinner than ours in the upper sail area. Yes in the top you have less puncture issues and you can even get away with the increased strech. Unfortunately though the UV-exposure is the same all over the entire sail. 
That's one of the reasons why the majority of Windsurf centres around the globe trust in DUOTONE products.

Polyester webbing only

Eliminating stretch and loss of tension. If it’s good enough for safety belts, it’s good enough for windsurfers! We are the only manufacturer to use only polyester webbing for the (vario) top and the tack roller. This advantage of this compared to conventional polypropylene is the negligible amount of stretch. As a result even brand new sails will retain full luff tension and will not need subsequent trimming.




What would you prefer? Maximum puncture resistance and UV weathering resistance with minimal stretch? Or (theoretically) improved ripstop properties?

We went with option A and developed the most durable laminate on the market. Because the factors of puncture resistance, durability and stretch evidently depend only on the thickness of the film used, we use only 150 or 100 micron thick films for our exclusive XPLY PLUS. In an extensive series of tests, we have developed the ideal combination of necessary film thickness and number of threads. The X.PLY PLUS in particular, at 150 microns in thickness, boasts durability characteristics far in excess of previous laminates at minimal weight. This is also acknowledged by all the big surfing centres and rental equipment providers around the world, who place their trust in the unbeatable quality and longevity of our sails.

Set & Go Vario-Top
Set & Go Vario-TopSet & Go Vario-Top

No more trial and error when trying to find the best vario top setting. Even when first rigging up, the correct length of the vario top is found straight away. Clear length indicators mark out the perfect setting with reference to the mast length used, eliminating any need for testing or re-adjustments.

TT Top
TT TopTT Top

Improved sail control at higher winds. Designer Kai Hopf originally designed the TT TOP for the WARP. The reduced, concave shape improves tension conditions for a more effective, three-dimensional top twist. This means the top twists not only horizontally, but also vertically under strong winds. By completely neutralising gusts of wind, the rig is kept steady in the rider’s hands, and thus works in a much larger range of winds.

iRocket 2.0
iRocket 2.0iRocket 2.0

Super-lightweight and aerodynamic.

An inconspicuous detail with a massive impact. iROCKET 2.0 batten tensioners are super-lightweight, aerodynamic and highly stable, consisting of high-quality components such as a self-lubricating, salt-water-resistant brass nut with stainless-steel screw which can withstand all batten tensions. Furthermore, the iROCKET 2.0 is an essential component for a true windsurfing revolution.

100% correct batten tension, correctly adjusted when purchased and forever after. We calibrate each individual batten at the factory according to development specifications. And we don’t just leave it up to blind intuition either – all battens are adjusted to 100% accuracy using torque wrenches. We also apply soluble screw adhesive to the locknuts so that the tension cannot be altered. This means that the batten tension remains absolutely correct and will never have to be adjusted again. The batten key included with the sail is therefore only needed for fine tuning or in the unlikely event of a batten breakage.

Mini Batten
Mini BattenMini Batten

These prevent unwanted leech flutter.

Short and highly effective mini-battens which provide support for the areas between the battens and prevent undesirable flutter.

Epoxy Batten
Epoxy BattenEpoxy Batten

Extremely stable, extremely break-resistant. Depending on the range of use, positioning in the sail and the necessary tension, the batten stress is enormous. In order to prevent breakages, we only fit into all solid battens extremely durable epoxy laminates which really can withstand anything and can live up to DUOTONE’s promises in terms of longevity.

Double Seam Technology
Double Seam TechnologyDouble Seam Technology

Double the durability with half as much stretch. DUOTONE manufactures products of unmatched quality which gives our sails a significantly longer lifetime. A key feature which helps to achieve this is the triple-stitch zig-zag seams. Unlike other products with their single-seam design, these are double-seam. They cover all exposed crash areas, which increases tear resistance and reduces bending-elongation by up to 50%, boosting profile stability and performance.

2+3 Year Warranty
2+3 Year Warranty2+3 Year Warranty

Guaranteed quality – no other brand offers anything close to it.

Keeping weight to a minimum is a great idea. But if necessary reinforcements are reduced too much, the product’s service life will automatically get shorter. DUOTONE has struck the perfect balance between weight and durability. To prove our dedication to ensuring durability and unique quality, almost all of our sails come with a 2+3 year warranty (excluding monofilm). To secure warranty claims fully, please remember to register at straight after your purchase. Otherwise, only statutory warranty claims will be accepted. This is valid only for original owners.

Mast Sleeve Opener
Mast Sleeve OpenerMast Sleeve Opener

Frictionless insertion of the mast into the luff sleeve. An ingenious solution does away with the tedium of inserting the mast. The DUOTONE logo above the boom cutout gently opens the sleeve so that the mast can be threaded with one hand into the luff friction-free, without having to constantly make adjustments to the luff.

Dura Luff Patch
Dura Luff PatchDura Luff Patch

Extremely stable luff reinforcement. The area around the boom cutout is exposed to extreme wear and tear as the luff panel gets folded when inserting and pulling out the mast. This “accordion effect” can lead to tears in the monofilm after a while. The flexible DURA LUFF PATCH reinforces this area making for a soft transition into the monofilm to avoid film breakage.

iBUMPER 2.0 (combined with VTS 2.0)
iBUMPER 2.0 (combined with VTS 2.0)iBUMPER 2.0 (combined with VTS 2.0)

A real innovation that offers additional value is the new iBUMPER 2.0, since in addition to its function as a lightweight and reliable mast protector it is also useful as a trimming tool. After stretching on a new sail, the best indicator for optimum trim is the position of the mast end at the height of the protector. For this reason, the new iBUMPER 2.0 now has a vinyl viewing window so that the lower edge of the mast can be identified. Once the perfect trim has been found, the optional Velcro patch can be used to “save” this position – saving time and ensuring maximum performance.

Polyester Webbing Only
Polyester Webbing OnlyPolyester Webbing Only

Eliminating stretch and loss of tension. If it’s good enough for safety harnesses, it’s good enough for windsurfers! We are the only manufacturer to use only polyester webbing for the (vario) top and the tack roller. This advantage of this compared to conventional polypropylene is the negligible amount of stretch. As a result even brand new sails will retain full luff tension and will not need subsequent trimming.


Optimised pull. On regular top caps and pin systems the webbing is connected in a “one-dimensional” way with the sail body (either side to side or front to back), which transfers the downhaul tension only in certain points. The 3D TOP CAP allows a “three-dimensional” and very widespread transition of the downhaul forces into the sail body. This eliminates top fluttering and ensures a progressive loose leech extending the wind range. The integrated abrasion ribs eliminate the need for heavy, bulky reinforcements at the end of the luff sleeve.


Inspired by high-strength climbing harnesses and Formula 1 helmets. The exclusive, two-part metal double-D buckle on the vario top, which replaces traditional solutions. This design guarantees the best trimming characteristics and eliminates all webbing slippage.


The correct boom length without the need for trial and error. Because the boom is attached to the mast at different heights depending on body size, and because this creates a different angle to the mast, the boom length will vary. Specific recommendations for the correct length are printed directly on the luff sleeve at the boom level.


Long-term guarantee for the sail foot. When starting off on the water or catching up, the foot of the sail is constantly dragged over the nonslip coating, particularly for wide boards. With the exclusive DURATECH FOOT, the seams are completely protected within a large plastic channel so that the surface cannot chafe against seams and material.


Perfect trim and a huge range of use.

You won’t find a quicker or more accurate way of trimming your sail. Even beginners can trim the sail in a matter of seconds to 100% accuracy. All you need to do is pull the luff until the top of the loose leech reaches the “lower wind limit” or “upper wind limit”. The VTS acts as a power boost, ensuring maximum performance and broader range of use.


Never position your harness lines incorrectly again. Do away with the tedium of adjusting to the optimum rope position, as well as the numb forearms and the endless fiddling around. The patented print on the sail shows exactly where the centre of the harness line has to be. All you need to do is position the two ends symmetrically at the left and right of the print.

Polyester Webbing Only
Polyester Webbing OnlyPolyester Webbing Only

Eliminating stretch and loss of tension. If it’s good enough for safety harnesses, it’s good enough for windsurfers! We are the only manufacturer to use only polyester webbing for the (vario) top and the tack roller. This advantage of this compared to conventional polypropylene is the negligible amount of stretch. As a result even brand new sails will retain full luff tension and will not need subsequent trimming.


This keeps the sail rolled up and holds the protector to the mast. A brilliantly simple fastening system which keeps the sail compact and closed after being rolled up and, when on the water, holds the mast protector closely to the mast.


During the development of the TACK ROLLER 2.0 we've measured the downhaul forces on all kind of sails. We've found out these interesting facts:

1. When downhauling a cambered slalom sail the forces necessary are nearly 3 times as high as when downhauling a no-cam (wave) sail (160 kg vs. 60kg)
2. With a 6:1 power-ratio you need to pull twice as much rope-length as with a 4:1 ratio. Therefore, with a 4:1 ratio you can downhaul the sail in one go, whereas with a 6:1 ratio you always need to retighten the rope.
3. Threading the rope through all rollers (without the rope getting crossed) takes at least 4 times as long as just looping the rope.
4. In theory with a 6:1 power-ratio the downhaul forces should only be half as high compared to a 4:1 ratio. In real life though the friction loss at each roller reduces the downhaul tension by only 15% at most (wave sail: 57 kg vs. 60 kg / slalom camber sail: 135 kg vs. 160 kg).

Therefore, we've designed 2 versions of the TACK ROLLER 2.0:

>> NOCAM Version used on all no-cam sails
The massive comfort and speed advantages of the 4:1 ratio (Loop-Loop-Go) outweigh the very slightly reduced downhaul forces of the 6:1 ratio. 
This version features 2 nickel plated brass rollers at the outside plus a center spacer featuring a bigger diameter. This ensures that the rope loop automatically slips into the 2 outside rollers.

>> CAM Version used on all cambered sails 
The downhaul forces are so massive that even a small reduction helps.
The 3rd slightly bigger roller allows to either use the 4:1 (Loop-Loop) or the 6:1 (Thread-Through) option.


What would you prefer? Maximum puncture resistance and UV weathering resistance with minimal stretch? Or (theoretically) improved ripstop properties?

We went with option A and developed the most durable laminate on the market. Because the factors of puncture resistance, durability and stretch evidently depend only on the thickness of the film used, we use only 150 or 100 micron thick films for our exclusive XPLY PLUS. In an extensive series of tests, we have developed the ideal combination of necessary film thickness and number of threads. The X.PLY PLUS in particular, at 150 microns in thickness, boasts durability characteristics far in excess of previous laminates at minimal weight. This is also acknowledged by all the big surfing centres and rental equipment providers around the world, who place their trust in the unbeatable quality and longevity of our sails.



“For me the new Super_Hero is the best ultimate wave sail I have ever had. In underpowered float and ride conditions the range is unbelievable. Yet it remains stable and very controlled in every situation - in all wave conditions, all over the world.”
“The new Super_Hero is just simply the sail of my dreams becoming reality... It kept the drive, easy handling and reliability of the previous years but with a much lighter feel in the hands, more efficiency and faster feel.”

Sail Basics

Design physics of modern Windsurf sails


Especially in the top and towards the clew weight is key cause due to the leverage-effect you feel every gram a multiple times in your hands. Because of the quite limited amount of materials available though the only way to reduce the sail weight is by reducing the thickness of the materials. The secret is finding the sweet spot of lowest possible weight but without sacrificing durability and longevity/sustainability.

Modern Windsurf sails consist of the following raw materials:

Rough woven Polyester fabric. The rough structure gives it a maximum abrasion resistance against impact from the outside (e.g. board contact or contact during rigging) as well as from the inside (through the mast).

Plastic film made out of Polyester available in clear- or colored versions. This hard plastic film has a very low stretch (for maximum performance) and doesn‘t absorb any water (dry weight = wet weight). Attention: monofilm isn't very UV-resistant. Therefore keep your sail out of direct sun light when not sailing. Also monofilm isn't very abrasion resistant.

2 thin layers of monofilm and a pattern of threads (out of Polyester or Dyneema) are glued together creating a sandwich laminate. The additional threads are supposed to function as a rip stop in case the film gets punctured (e.g. falling into the sail with your harness hook first). When using the same total thickness as monofilm (= same low stretch, same UV- and puncture-resistance) XPly is 30% heavier due to the additional adhesive (and threads).

Before discovering monofilm original Windsurf sails were made entirely out of Dacron. This woven fabric offers a very good abrasion resistance but is very stretchy plus elongates (means it grows with each use). Therefore nowadays mainly used for reinforcement patches to protect the monofilm and XPly panels in the high abrasion areas of your sail (foot, clew, top and outside of batten pockets).

Dacron material with a self-adhesive side. Therefore it doesn‘t require seams when put on top of the film plus prevents water from getting in-between the film and the abrasion patches (= lower wet weight).

Wanna know more details or looking for DUOTONE sail spare parts - here you go

Design Features

Made out of glass- or carbon fiber either as solid version with smaller diameter (= stronger) or tube version with larger diameter (= stiffer). For a better understanding the mast is like the backbone of your sail whereas the battens act like the ribs of your sail keeping the profile in place. Same as the mast also the battens have individual profiles (thinner tip, thicker tail) matching the profile of the sail.
Simple rule: the more battens the more stable (= faster + bigger wind range) the sail becomes. But also the heavier the sail becomes as battens account for approx. 40% of the sails total weight. Therefore handling/wave-oriented sails usually come with 4-5 battens whereas performance oriented sails usually come with 6-7 battens.
As a second guideline smaller sail sizes require fewer battens than larger sizes.

Usually there is a certain gap between the batten tip and the mast. This is necessary so that the batten can shift from one side of the mast to the other when sailing back and forth. A camber can be seen as a kind of connection between the batten tip and the mast filling out this gap.
This leads to much better aerodynamics as the cam enables a smooth transition between the thick mast into the thin sail body. In addition since the cam is braced against the mast the batten stabilises the sails profile much more effectively (sail becomes more stable = faster).
The downside is that the rotation from one side to the other becomes much harder. Plus the cambers need a certain space which requires a wider mast sleeve. This makes (water)starting much harder as the wider mast sleeve absorbs more water. Therefore cambers are mainly used on performance Freeride or high-performance Slalom sails.

A sail with a lot of foot roach reduces the gap between the sail and the board (close the gap) which makes it more efficient/performance-oriented.
On the other hand a high cut foot with less foot roach improves the handling especially for all kind of ducking moves. 

A deeper sail profile gives you more power and performance in general.
A flatter profile on the other hand improves the handling as the distance of the flat profile is much shorter when shifting from one side to the other.

Together with the sail size all dimensions increase. Means in general the larger the sail the longer the boom- and luff lengths become.

Design Features
Sail size vs. body weight

Simple rule: a heavier sailor needs to take a larger sail size to get planning in the same wind compared to a lightweight.

Rough indication for the biggest sail size: to get going in the same wind a 10 kg heavier guy requires a 1 sqm larger sail.

Max. sail size vs. body weight:
The larger the sail, the heavier and the more “sluggish” the rig becomes. In addition, larger sails require stiffer masts to keep the surface "in shape". A heavy rider provides more "counter-pressure" to the sail area and mast stiffness than a lightweight. That's why the sail tends to pull you out of balance, gets difficult to control during maneuvers and becomes inefficient to pump when it is too large for your body weight.
In relation to your body weight, there is a maximum sail size that should not be exceeded.
Here are some guidelines:
>> 9.0+: min. body weight 95kg
>> 8.0-8.3: min. body weight 80kg
>> 7.0-7.3: min. body weight 70kg

As a general rule rather use a slightly too small than a too big sail.

Guidelines for building up your personal sail quiver

First you should define the biggest and smallest sail size you will need to cover all wind speeds you wanna sail in. This mainly depends on your body weight (see above).
Let’s take an “average” 75 kg sailor and let’s assume this guy wants to sail in “any kind” of wind.
- The biggest sail size this guy would need is something like a 7.3. With a capable 100-120 litre Freeride board this size would get him planning in approx. 8-10 knots.
- His smallest size would then be a 3.7. On a 70-80 litre (Free)Wave board our guy should be fine up to approx. 40-45 knots.

Second thing is to define the sizes in-between. Important to know: the wind pressure (which you feel in your hands) raises in square in relation to the wind speed. Therefore the smaller the sail size the smaller the size increments need to become. For large sails, the gap can be up to 1.5 sqm, while for very small sails it can go down to 0.3 sqm.

Taking all of this into account a typical quiver for our 75 kg guy could look as following:
7.3 - 6.0 - 5.3 - 4.7 - 4.2 - 3.7

Taking the “10 kg = 1 sqm” rule (see previous point) in consideration a typical quiver for an 85 kg guy could then be:
8.3 - 7.0 - 6.0 - 5-0 - 4.5 - 4.0

Why not blindly rig according to the specs printed on the sail?

You have bought all parts from the same brand but if you rig according to the specs printed on the sail it still feels somehow ackward.
Unfortunately every product has tolerances in production. And the bigger a product becomes the bigger the tolerances become. Therefore tolerances on a smartphone are hardly visible whereas tolerances on Windsurf equipment are non-deniable.
- The tolerances on the mast length are approx. +-5 mm.
- The tolerances on mast extensions and booms are approx. +-3 mm.
Furthermore, there is unfortunately still no standard among brands on how to measure the length of booms and extensions.
- On a sail with all its panels the tolerances over the whole luff length can add up to another +-5-10 mm.
In addition, even with monofilm sails the luff stretches in the first 3 times you use the sail due to the massive downhaul tension.
Adding up all these tolerances you start realising why the absolute numbers printed on your sail (especially the luff length) can only be an indication to adjust your mast extension- and boom lengths.

To achieve the correct downhaul tension please make sure to only rely on the VTS (Visual Trim System) markers in the top of every DUOTONE sail.
Always keep in mind there are exactly 2 things either of them potentially killing at least 30% of your sails performance:
1. The wrong mast (see first point under MAST BASICS on every mast page)
2. Wrong/insufficient downhaul tension

Sail Care
  1. Always rig according to the rigging instructions - see here.
  2. After use in salt water, rinse or spray down with fresh water. At the very least at the end of a vacation or trip.
  3. When possible only roll up the sail once it has dried. Never store a rolled up sail for any extended periods of time unless it is dry.
  4. To dry, release the tension from the sail; if possible do not set out to dry in direct sunlight, and do not dry it by letting it flutter in the wind.
  5. Always roll the sail from top or bottom, keeping all battens under full tension in their sleeves!
  6. Use only recommended mast components for your sail in order to attain optimum performance.
  7. Do not wash your sail with harsh detergents or chemicals. Water and a mild soap are fine.
  8. Repair tears and holes in monofilm sails immediately to prevent further tearing. If proper repair is impossible (and this includes using the DUOTONE monofilm repair kit), at least seal the tear with normal tape or a sticker.
  9. The sails durability is directly related to
    a. the frequency of use
    b. sail care and
    c. UV-radiation (especially in monofilm sails)
    In places with high UV-radiation, store the sail in the shade, otherwise de-rig it.




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The global pandemic continues to cause raw material shortages, restrictions at our manufacturers and greatly extended shipping times, which doesn’t allow a constant and planned flow of deliveries. Therefore please note that although we are doing everything we can to get you the equipment you want, availability is limited, especially at product launches. 


We do listen

Be part of the Duotone development

Wanna improve future products?


We strive to create products that are superior in performance and function to anything else on the market. Therefore, we are not just interested in the opinion and experience of professional riders, but listen to ALL windsurfers out there. Because we know we can learn from everyone, we want to collect the opinions of windsurfers worldwide.

This project runs throughout the whole year. Every year on January 15th, the best ideas will be rewarded and might actually be implemented into future products.

So, you have got an idea? Contact us >HERE<  and take your chance to make a difference. (Please use "R&D input for DTW" as a subject line)


1st - One sail (free of choice)

2nd - One Silver Boom (free of choice)

3rd -  One Power.XT 2.0 (free of choice)

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