DESCENTE MENS S.I.O SHELL 3L JACKET

DESCENTE MEN’S S.I.O SHELL 3L JACKET

Built for extreme mountain environments, the Descente Men’s S.I.O Shell 3L Jacket features a 3-layer Dermizax 20,000mm/20,000g waterproof and breathable membrane for total storm protection. Proprietary S.I.O (Minimum Pattern Cutting) technology reduces traditional seam lines and panel breaks, optimizing fabric stretch, lowering overall weight, and minimizing potential points of water entry. High-density 4-way stretch face fabric ensures total freedom of movement when navigating technical terrain or carving sharp turns.

Engineered for active mountain ventilation, this shell incorporates Dual Zip front adjustments and underarm pit zips to rapidly release excess heat and moisture. Dual chest ventilation pockets provide targeted airflow while keeping essential gear dry under fully taped seam construction. Complete with an integrated powder skirt, helmet-compatible hood, Cohaesive cord lock adjustments, and waterproof YKK hardware, it delivers uncompromised backcountry performance.

Key Features

• 3-layer Dermizax 20K/20K waterproof and breathable membrane
• S.I.O pattern engineering for minimal seam construction and maximum mobility
• 4-way stretch shell fabric with fully taped seams
• Dual Zip front ventilation system and underarm pit zips
• Helmet-compatible adjustable hood with Cohaesive cord locks
• Integrated powder skirt and Lycra wrist gaiters with cuff zippers
• Water-resistant YKK hardware and dedicated pass pocket

Best For

• High-exertion backcountry touring and steep alpine skiing
• Severe storm protection in wet, high-elevation winter environments
• Technical layering over insulation or active thermal midlayers