Icebreaker Size Chart 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 technical design. In the body, MerinoLOFT(TM) insulation provides a warm, breathable and natural alternative to synthetic insulation. The 100% recycled polyester face fabric features a DWR that sheds light precipitation. Merino jersey stretch side panels help regulate body temperature on active days, and the 100% woven merino lining ensures a cozy feel inside. Zippered hand and chest pockets keeps small essentials securely stowed. Features: - Updated design - Water resistant - MerinoLOFT insulation - Shaped hood for warmth and protection - Internal storm flap - Woven merino lining - Zippered chest pocket - Zippered front hand pockets - Weight (Size Medium): 570 g / 20.11 oz - Face: 100% Polyester Panels: 46% Polyester, 38% Merino Wool, 16% LYCRA(R) - Fill: 70gm MerinoLOFT(TM) 88% Merino Wool, 12% Polylactide - Lining: 100% Merino Wool - Alternate images do not reflect actual color