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A semidry 7mm suit in stylish blue neoprene with WPAD™

Waterproof is proud to introduce the new SD4 Semi Drysuit, the latest innovation in the long line of popular Semi Drysuits produced by Waterproof. With new technology in its materials and featuring the very popular WPAD, Waterproof Personal Accessory Dock, the soft, artfully constructed docking station for removable, expandable pockets, lifts this popular suit category beyond expectations.

Also new is the exceptional T-Zip dry zipper that adds extra softness and movability to an already well-tested and popular semidry suit model. Like all Waterproof suits, it features a unique anatomical design, super stretch neoprene seals on the neck and wrists, and the 3-dimensional hardcore rubber knee guards and reinforced shoulders and elbows. Additional features and smart product details can be found by clicking on the image.

Delivered with an H1 H.A.V.S hood. The SD4 bridges the gap between a Drysuit and a Wetsuit. It is dry enough to keep the diver warm in colder water, yet maintains the snug fit of a high-end wetsuit. Perfect for long rebreather dives in warmer environments and minimal internal water flow, which extends the time before hypothermia becomes an issue.

Product features

3D anatomical sculpting – With pre-bent arms and legs provides a perfect anatomical fit when in a diving position.

3D Kneepads – 3D moulded vulcanized rubber kneepads. Note the unique design that enables unrestricted leg movements via the “hinge effect”.

A seat that grips – Polyurethane embossing in the back provides a non-slip grip and integrated abrasion protection.

Comfort zipper – Fully gusseted ”comfort zipper” to relieve stress on the surface.

Double seals – Generous double seals made from smooth skin neoprene with zipper at arms and legs. YKK #10 Vislon zipper features a TA slider with an anti-slip designed ZipGrip.

Gender-specific styling – Provides comfortable lift and support.

Neoprene neckseal – Soft and comfortable GlideSkin Neoprene neckseal.

Pocket – The expandable XPAND Pocket mounted on the WPAD.

Reinforced shoulders – Critical abrasion area and anti-slip protection.

T-ZIP flexible dry zipper – A T-ZIP Gas-proof zipper with a chill guard, horizontally across the shoulders makes the suit dry and warm.

TOUGHTEX – On elbows and knees. Best way to armour your suit.

Waveflex panels – In hollow of arms and legs.

The WPAD™ – The Waterproof Personal Accessory Dock, is a soft artfully constructed docking station used for attaching our expandable pocket.

Materials and care

Please refer to the drysuit manual on how to best take care of your drysuit.

Waterproof Drysuit Manual


Men XS, S, S/t, M, M+, M/t, ML, ML/t, L, L+, L/t, XL, XL/t, XXL, XXL/t, 3XL/t

Ladies XS, S, M, M+, M/t, ML, ML/t, L, L+, L/t, XL, XXL

Size availability is subject to change without notice. Please contact your Waterproof retailer for availability.

Model and article number

SD4 Men, Art. No. 6421

SD4 Ladies, Art. No. 6422


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