Designed as an active alpine midlayer for cold, high-output days of skiing, climbing, snowshoeing or hiking, the men's Helix long sleeve zip hood combines sustainable materials with a sculpted fit and technical design. The Helix's zoned design features ou. Face: 100% Polyester; Fill: 88% Wool/12% Polylactide Body; Lining: 100% Wool Sleeve; Lining: 100% Polyester.