Duotone, 2025

Downwinder Slim SLS 2025

2591mm long · 8'6"

483mm wide

≈ 145mm thick · estimated

110litres

Open in Studio See it on duotonesports.com

Sizes & Numbers

Listed by the brand, read off a photo, or worked out: where every number comes from

In one line

Its width sits further forward. A pin tail, a medium nose and curvy rails.

derived · against the 66 other downwind foil boards in the atlas, read off the outlines.

As listed by Duotone

Duotone Downwinder Slim SLS 2025: every size as listed by Duotone
size	length	width	thickness	weight
90 L	7'6" · 2286 mm	457 mm	≈ 142 mm · estimated	5.5 kg
100 L	8'0" · 2438 mm	470 mm	≈ 144 mm · estimated	5.9 kg
110 L	8'6" · 2591 mm	483 mm	≈ 145 mm · estimated	6.5 kg

Every size side by side, tails on one line, one scale

Next to your board?

Lay the Duotone Downwinder Slim SLS 110 L over up to four others, at one scale.

Compare with…

Generations

After it · 2026

The 2026 90 L is 13 mm narrower than the 2025 90 L, same length; its wide point moved 15 mm toward the tail. Open the 2026

listed length and width · wide point derived

2025 90 L 2026 90 L

The Duotone Downwinder Slim SLS over time

Shape & Rocker

From above, then from the side, true scale · the chosen size solid, the others dashed

Read off the 90 L outline · derived

58 %wide point, 1316 mm from the tail

5.00length over width

258mm wide 12″ from the tail

7,876cm² of planform

Read off the 100 L outline · derived

58 %wide point, 1404 mm from the tail

5.19length over width

256mm wide 12″ from the tail

8,635cm² of planform

Read off the 110 L outline · derived

58 %wide point, 1491 mm from the tail

5.39length over width

252mm wide 12″ from the tail

9,387cm² of planform

Rocker of the 90 L · scaled from the 110 L, borrowed (≈), estimated

≈ 92 mmtail rocker, at the tip

≈ 14 mm12″ from the tail

≈ 48 mm12″ from the nose

≈ 150 mmnose rocker, at the tip

≈ 856 mmflat to within 3 mm, from 23 % to 60 % of the length

47 %of the length to the lowest point, from the tail

≈ 142 mmat its thickest, 40 % from the tail

≈ 56 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 100 L · scaled from the 110 L, borrowed (≈), estimated

≈ 99 mmtail rocker, at the tip

≈ 17 mm12″ from the tail

≈ 55 mm12″ from the nose

≈ 161 mmnose rocker, at the tip

≈ 896 mmflat to within 3 mm, from 23 % to 60 % of the length

47 %of the length to the lowest point, from the tail

≈ 144 mmat its thickest, 40 % from the tail

≈ 60 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 110 L · borrowed (≈), estimated

≈ 106 mmtail rocker, at the tip

≈ 20 mm12″ from the tail

≈ 62 mm12″ from the nose

≈ 172 mmnose rocker, at the tip

≈ 937 mmflat to within 3 mm, from 23 % to 59 % of the length

47 %of the length to the lowest point, from the tail

≈ 145 mmat its thickest, 40 % from the tail

≈ 64 mmlonger along the bottom curve than flat

Lay this rocker over other boards

True proportions · dots at 10 mm and 12″ in from each tip · bracket: flat to within 3 mm · drawn hollow: no usable side photo of this board · Duotone's side photo (DownwinderSlimSLS_DB_6701.png) isn't traced: its side shots are three-quarter views (the nose much nearer the camera than the tail), which can't be measured. From Duotone's photo of the Downwinder Slim SLS 2026, the same line with other dimensions, a year later. Tail end set by Claude on the Downwinder Slim SLS 2026's photo, not checked by a person. · estimated