YOU KNOW THE FEELING: ONE SAIL FOR FREEMOVE AND FREESTYLE DAYS, ANOTHER FOR WHEN THE SWELL BUILDS UP — AND THE WIND NEVER STICKS TO THE PLAN. THE DUKE SLS ENDS THE COMPROMISE. IT SENSES THE BOARD UNDER YOUR FEET AND SHIFTS ITS DRAFT TO MATCH, SO ON A HIGHER DRAG MULTI-FIN WAVE BOARD IT PULLS EVENLY FOR MAXIMUM CONTROL FROM THE FIRST BOTTOM TURN TO THE TOP OF EVERY CRITICAL SECTION. DROP IN AND COMMIT.
The DUKE SLS is Duotone's 5-batten SLS sail for intermediate to advanced riders who combine Freewave and wave riding.
The DUKE SLS adapts its pull character to the board you're riding. Rig it on a single-fin Freewave or small Freeride board and it produces a slight forward pull that keeps the session flowing. Put the same sail on a higher-drag multi-fin wave board and the pull distributes evenly across both hands, putting you in control on steeper, more critical sections. This windsurfing sail covers both scenarios without any setup change.
That versatility comes from the DEFINED DRAFT MOTION concept: a slightly forward draft position with precisely controlled flex. CARBON XPLY batten pockets lock battens and draft into a defined position with virtually no stretch, giving the sail the response of carbon battens while preserving the durability of glass battens to survive even gnarly washes. Additional CARBON XPLY reinforcement in the high-load top and tack areas, combined with a STRIPPED TO THE MAX panel layout, keeps the whole package noticeably light.
Low-end power is addressed by the BATTEN FREE CENTER concept. The larger gap between the foot batten and the batten above the boom makes the boom area easier to inflate, delivering the early planing response of a 4-batten sail with the control of a 5-batten. From gusty side-shore freewave sessions to proper overhead surf, the Duke SLS keeps you in control through every turn.
New for 2027: a fresh yellow/black colorway. The proven technology carries over unchanged.
Target rider: intermediate to advanced windsurfer
Best for: Freewave, wave riding, Jump N' Ride, New School Freestyle
- CARBON XPLY batten pockets with DEFINED DRAFT MOTION concept for locked-in draft control
- BATTEN FREE CENTER concept: 4-batten low-end power in a 5-batten design
- STRIPPED TO THE MAX panel layout for minimal weight
- Chameleon pull character adapts to single-fin and multi-fin wave boards
Sizes 4.2 to 6.2
ONE SAIL. EVERY BOARD, EVERY WAVE, EVERY GUST. RIG IT ONCE AND FINALLY THERE ARE NO BAD CONDITIONS ANYMORE.
CHAMELEON CHARACTER
The first sail morphing the advantages of a Freewave sail with a truly capable down the line wave sail
SLS >> STRONG-LIGHT-SUPERIOR
400-500g lighter than the Original DUKE
BATTEN FREE CENTER
Larger gap between the foot batten and the batten above the boom >> better inflation (= planing power) in the boom area and improved stability in the upper sail area
VTS TAIL outhaul specs
Each sail carries individually defined visual indications for the correct outhaul extension (requires VTS TAIL boom).
iROCKET 2.0
Factory calibrated individual batten tensions using a torque wrench
SUPER-LIGHT BUMPER incl. VTS slot
The lightest protector on the market. The integrated vinyl viewing window allows to spot the lower edge of the mast. Once the perfect trim has been found, the optional Velcro patch can be used to “save” this position – saving time and ensuring maximum performance.
