Shell: 100% super fine acrylic yarn Lining: Omni-Heat 100% polyester, with an Omni-Wick 85% polyester/15% elastane earband HEAT-TRAPPING BEANIE This beanie keeps you comfortable during dynamic winter activity with an exceptional fit, a thermal-reflective lining, and a sweat-wicking earband. Features: Omni-Heat thermal reflective lining traps your body heat for the ultimate in breathable warmth Omni-Wick ear band actively breathes and pulls moisture away from your skin Brand Columbia SKU 100268602_NP-1020527822