Descente S.I.O Shell 3L Jacket

The Descente S.I.O Shell 3L Jacket is a non-insulated, three-layer hardshell built for hard alpine days. It sits at the top of Descente's shell line and uses the brand's S.I.O (Skin Illusion Optimize) construction, the same approach found in Descente's World Cup outerwear — this 26/27 jacket is a replica of the 2025 World Cup Swiss Team model.

The shell is a matte 4-way stretch, three-layer laminate built on a Dermizax waterproof/breathable membrane, rated 20,000 mm waterproof and 10,000 g/m²/24h breathable, with fully sealed seams. What sets it apart is the S.I.O engineered pattern: panels are cut to minimize seaming, which improves mobility and weather protection at the same time. Key features:

• Dermizax three-layer waterproof/breathable shell, fully seam-sealed
• Matte 4-way stretch face fabric for unrestricted movement
• Descente Breathing System ventilation with dual-zip adjustment
• Hood, quick wrist adjusters, and a powder skirt
• Interior IC pocket

This is a shell for skiers who manage their own warmth and layer underneath rather than relying on built-in insulation. It handles wet coastal storms and cold high-alpine days when you pair it with the right midlayer, at the resort or in the backcountry. Because it runs a race-derived regular fit and layering is part of the system, come in and we'll help you dial in the size and build a layering setup that matches how and where you ski.

Available in icicle gray and icicle, men's sizing.