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Grip 3 SLS Windsurf Board
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WORLD CUP WAVE TRI-FIN
You want a full custom board to ensure the best possible weight><strength ratio. But you still want a proven and tested shape from the brand with the longest experience in windsurf board design. Look no further here comes the 20.25 Grip SLS!
FULL DESCRIPTION
Because now all our 2025 Wave >< Freestyle boards are made in a FULL CUSTOM TECHNOLOGY. This makes the 2025 SLS boards again approx. 200g lighter yet much stronger than boards made in the usual semi custom construction: STRONG-LIGHT-SUPERIOR! For further details please see below under D/LAB vs. SLS vs. ORIGINAL.
But for us custom made stops at the shape of the board because custom shapes often turn out to be a surprise egg.
Our GRIP SLS boards are constantly evolving designs and constructions to ensure we are continuously at the forefront of development yet with over 40 years of experience. We call them World Cup Wave boards as they are engineered to satisfy the best of the best on all kind of spots around the globe, from jumping-oriented side-on conditions like Pozo to down-the-line groundswell conditions like Hookipa.
During development, the major inputs came from 3-time PWA Wave World Champion Victor Fernandez and our next gen heroes Alexia and Carlos Kiefer and Tobias Bjornaa. We have selected these guys as they all have a very contest oriented riding style. Therefore instead of demanding super specialised and extreme shapes they always aim for:
- Boards that are super balanced and easy to control in all kind of conditions without taking on a life of their own, to score maximum turns and jumps
- Boards that are super versatile to sail and allow front- and back foot riding to get the most out of each wave even when the conditions are changing
- Boards offering a maximum wind range to avoid being forced to switch boards during the heat
Well isn’t that exactly what we all expect from our wave board? And that’s why Victor, Alexia, Carlos and Tobias are our most important assets in the development process. In fact, all our GRIP SLS production boards are exact replicas of their best boards from the PWA tour.
Now the most important question you need to ask yourself is which fin configuration best suits your personal riding style:
- The GRIP 4 with its Quad fin configuration gives you maximum drive and grip for committed rail to rail turns, even in XXL waves
- The GRIP 3 has a slightly better acceleration due an efficient rocker with a lower-drag entry, which is especially helpful in jumping conditions. The Thruster fin configuration allows for earlier tail release for tighter/slashier turns, even in non ideal waves
At DUOTONE, the main objectives for all our products are weight saving but at no cost of durability and offering an unmatched plug & play setup. Cause these are the 2 things that help everyone, from beginner to pro level.
Here is what we did to the 20.25 GRIP SLS lineup:
- No 5 multi-setup fin-boxes: this just adds unnecessary weight and drag and is always a compromise since every fin configuration requires a different board shape (bottom and rail shape, outline, scoop-rocker line) to exploit its full potential. It also prevents the board from becoming tail-heavy/sticky. Plus finding a good working setup with 5 boxes is just the opposite of plug & play.
- The mini mast track reduces the weight in the critical nose area. It also reduces the risk to misplace your mast base while still providing just the right amount of length adjustment for all riding styles and sail sizes.
- The mini side fin boxes no longer offer any adjustment to prevent misplacing your fins. Now all adjustability for different riding styles and sail sizes is done through the center fin(s) only - simple and lightweight!
- Our exclusive FULL CUSTOM layup based on over 40 years of experience got refined by DUOTONE chief board construction and QR manager Vasin Siritho.
- Even the artwork got weight optimised by switching from heavy PVC to ultralight water-transfer stickers.
All these efforts result in the best weight vs. durability out there.
In addition, they simply work to their best right out of the box, just plug & shred.
YOUR NEW GRIP SLS DREAM MACHINES ARE READY AND WAITING FOR YOU TO TAKE YOUR RIDING TO THE NEXT LEVEL!
KEY FEATURES
NO-COMPROMISE THRUSTER SHAPE
The GRIP 3 shape is 100% tuned to the thruster fin setup
WORLD CUP WAVE DESIGNS
All GRIP boards are designed to work all around the globe from groundswell Hookipa to onshore Pozo conditions.
MINI MAST TRACK AND SLOT BOXES
Weight saving plus maximum PLUG & PLAY through less options
FULL CUSTOM SLS TECHNOLOGY
The FULL CUSTOM SLS TECHNOLOGY is build like a real custom made board
- PRODUCT INFORMATION
- FULL DESCRIPTION
- KEY FEATURES
- DELIVERY & RETURNS
WORLD CUP WAVE TRI-FIN
You want a full custom board to ensure the best possible weight><strength ratio. But you still want a proven and tested shape from the brand with the longest experience in windsurf board design. Look no further here comes the 20.25 Grip SLS!
Because now all our 2025 Wave >< Freestyle boards are made in a FULL CUSTOM TECHNOLOGY. This makes the 2025 SLS boards again approx. 200g lighter yet much stronger than boards made in the usual semi custom construction: STRONG-LIGHT-SUPERIOR! For further details please see below under D/LAB vs. SLS vs. ORIGINAL.
But for us custom made stops at the shape of the board because custom shapes often turn out to be a surprise egg.
Our GRIP SLS boards are constantly evolving designs and constructions to ensure we are continuously at the forefront of development yet with over 40 years of experience. We call them World Cup Wave boards as they are engineered to satisfy the best of the best on all kind of spots around the globe, from jumping-oriented side-on conditions like Pozo to down-the-line groundswell conditions like Hookipa.
During development, the major inputs came from 3-time PWA Wave World Champion Victor Fernandez and our next gen heroes Alexia and Carlos Kiefer and Tobias Bjornaa. We have selected these guys as they all have a very contest oriented riding style. Therefore instead of demanding super specialised and extreme shapes they always aim for:
- Boards that are super balanced and easy to control in all kind of conditions without taking on a life of their own, to score maximum turns and jumps
- Boards that are super versatile to sail and allow front- and back foot riding to get the most out of each wave even when the conditions are changing
- Boards offering a maximum wind range to avoid being forced to switch boards during the heat
Well isn’t that exactly what we all expect from our wave board? And that’s why Victor, Alexia, Carlos and Tobias are our most important assets in the development process. In fact, all our GRIP SLS production boards are exact replicas of their best boards from the PWA tour.
Now the most important question you need to ask yourself is which fin configuration best suits your personal riding style:
- The GRIP 4 with its Quad fin configuration gives you maximum drive and grip for committed rail to rail turns, even in XXL waves
- The GRIP 3 has a slightly better acceleration due an efficient rocker with a lower-drag entry, which is especially helpful in jumping conditions. The Thruster fin configuration allows for earlier tail release for tighter/slashier turns, even in non ideal waves
At DUOTONE, the main objectives for all our products are weight saving but at no cost of durability and offering an unmatched plug & play setup. Cause these are the 2 things that help everyone, from beginner to pro level.
Here is what we did to the 20.25 GRIP SLS lineup:
- No 5 multi-setup fin-boxes: this just adds unnecessary weight and drag and is always a compromise since every fin configuration requires a different board shape (bottom and rail shape, outline, scoop-rocker line) to exploit its full potential. It also prevents the board from becoming tail-heavy/sticky. Plus finding a good working setup with 5 boxes is just the opposite of plug & play.
- The mini mast track reduces the weight in the critical nose area. It also reduces the risk to misplace your mast base while still providing just the right amount of length adjustment for all riding styles and sail sizes.
- The mini side fin boxes no longer offer any adjustment to prevent misplacing your fins. Now all adjustability for different riding styles and sail sizes is done through the center fin(s) only - simple and lightweight!
- Our exclusive FULL CUSTOM layup based on over 40 years of experience got refined by DUOTONE chief board construction and QR manager Vasin Siritho.
- Even the artwork got weight optimised by switching from heavy PVC to ultralight water-transfer stickers.
All these efforts result in the best weight vs. durability out there.
In addition, they simply work to their best right out of the box, just plug & shred.
YOUR NEW GRIP SLS DREAM MACHINES ARE READY AND WAITING FOR YOU TO TAKE YOUR RIDING TO THE NEXT LEVEL!
NO-COMPROMISE THRUSTER SHAPE
The GRIP 3 shape is 100% tuned to the thruster fin setup
WORLD CUP WAVE DESIGNS
All GRIP boards are designed to work all around the globe from groundswell Hookipa to onshore Pozo conditions.
MINI MAST TRACK AND SLOT BOXES
Weight saving plus maximum PLUG & PLAY through less options
FULL CUSTOM SLS TECHNOLOGY
The FULL CUSTOM SLS TECHNOLOGY is build like a real custom made board
Life is complicated enough, so we've made returning items as simple as possible for mainland UK. Head to your account and click the link for returning items and we'll take it from there. For exchanges, simply select "refund" and re-order the required item again. We'll refund the very moment it's returned to us.
For NI, Channel Islands, Europe and Rest of World, you the customer will need to return the item to us as collections are not possible.
For item's where we've made a mistake or the item is faulty - we'll refund all postage costs on receipt of postage receipt and dispatch replacements items FOC. For items simply no longer required or where you the customer has ordered the incorrect size or product, return postage will not be refunded and dispatching out will be chargeable.

Let customers speak for us
from 127 reviewsAfter purchasing this wing earlier this year it has noticeably made tacks so much smoother and overall upgraded my riding. I bought the 3.0 and 5.0 metre and my 3.0m flies very well in both underpowered and overpowered conditions
I purchased the Unit SLS 2025 wing earlier this year and it has made tacks so much smoother and upgraded my riding. I also bought the Duotone Carve 3.0 D/LAB 2025 with the 800 front wing and once again it’s been a game changer, having a great amount of glide which works perfectly for both wingfoiling and kitefoiling!
All thanks to the H2O team that always have loads of knowledge, passion for watersports and go above and beyond!
Preferring not to throw away my (now discontinued) North Red boom which had a broken cuff, I called H2O to see if there was any way to salvage it. I spoke with Matt who was very knowledgeable and helpful but came off the phone somewhat resigned that I might not be able to get the part. However to my surprise a little while later I was blown away (with a force 5) when I got a call to tell me he’d sourced one for me. And here I am now, a week on, with all the bits I need to get back on the water; whoever said people don’t have time to help others! So the moral of this story is have a little faith and try H2O!
Preferring not to throw away my (now discontinued) North Red boom which had a broken cuff, I called H2O to see if there was any way to salvage it. I spoke with Matt who was very knowledgeable and helpful but came off the phone somewhat resigned that I might not be able to get the part. However to my surprise a little while later I was blown away (with a force 5) when I got a call to tell me he’d sourced one for me. And here I am now, a week on, with all the bits I need to get back on the water; whoever said people don’t have time to help others! So the moral of this story is have a little faith and try H2O!
Ordered a 1350 Glide 2.0 to progress on to from my 1750 aero free. Being a heavier rider I've found it's now my go to foil wing, initially a bit harder to get on the foil compared to the aero free but once up it feels completely effort less! Thanks to the team for getting me sorted out 🤙
James, Matt and the H20 Team are absolute gurus of the water sports industry, friendly, helpful and knowledgable. They will always give the right advice and come up with superb deals and first class support, thanks guys for always helping me to make the right decisions over the last 20 + years!
My new mast arrived from H20. Sports and it was so worth the wait. You immediately notice how much stiffer it is compared to the v1 carbon version when riding. The foil feels more responsive and direct .It also glides longer in transition s and riding bumps.
Its well worth the upgrade in my opinion.
I bpught this wing to replacr my Unit 5.5 m wing for tje summer breezes as i never liked using big wings. This wing is really powerful in the low end and allows you to pump really efficiently to get on foil with a bit of technique.
You can size down by half a metre with this wing compared to a Unit.
Its still fast and so good iwhen you roll into a tack.
Perfect quiver would be a 3 m , 4m & a 5 m in the Float for all conditions.
Its a great price too as lower than Dlab and SLS wings but with great performance.
As one of the H2O riders I have really enjoyed the variety of kit H2O have available. Including the Duotone sky surf 35Ltr which quickly become my favourite board because of its shorter and thicker shape while being low in litres it still allows me to get it out the water in some lighter winds. However it comes into its own when the wind is strong and the waves are pumping with its incredible manoeuvrability. Paired with the Duotone units (that are light weight and precisely balanced) wave riding is a dream.
I've been one of those riders who thought one board was enough. Turns out a downwind board has opened up so many more days on the water. I cant believe how easy this beast gets going in 6 knots. I use my 8' board with the 1100 and 1595 Duotone Glide. It's like a whole new sport. Whilst I've tried paddling up, I think I'll stick to winging for now (although can't wait to try the Stash Parawing).
Lots of the benefits of the DLAB Unit but without the price tag. Strong, light, and powerful. It's been great in all conditions, handles really well when over powered. I bought the 3.5, 4.5 and 5.5 to cover all eventualities. Personally I prefer the handle option which works really well with my harness. Matt and the team really helpful in deciding on the sizing.
I absolutely love my 65L/4'9" Sky Style SLS Wing Board. I'm about 88kg and it suits me for most conditions. Easy planing, great in waves, sold for jumping. Incredibly light, especially when paired with a DLAB Carve 800 foil and mast, which makes it a great overseas travel option too. Carbon finish and colours look great (picture on website doesn't do it enough justice). Not a big fan of the front foot straps overlapping but going to put the new v-strap on which will sort this.
I usually go for the DLAB or SLS Concept Blue Units but this wing has had great reviews so thought I'd give it a try. Great power delivery and handling, really light weight but solid construction. The wing’s dihedral and tension profile give amazing flight balance so although designed for wave/downwind, I think this wind would suit all levels. Bought teh 5m for the summer but bought a 4 ready for the winter swell.
The 2025 Unit is a good allrounder fast, stiff & light wing.
I prefer to size down my Unit as they are really grunty wings.
They also have great top end aswell and the white colourway looks cool.
I have ridden the Skybrid SLS 70 litre and its a great hybrid board between a short wave freesyle board and a mid length shape.
Easy to get up though its narrower than my previous boards and does require a little more effort.
The big advantage is the early planing speed to get on foil and the glide.
Its a good allrounder in waves and flat water.