Columbia Sportswear Heat Beanie 100% acrylic, Omni-Wick Microfleece 100% polyester, Omni-Heat Reflective Interlock 100% polyester Imported This high-performance beanie combines body-heat-trapping thermal reflective technology with a super-wicking earband to keep you dry and comfortable during dynamic activity in the cold. Omni-Heat thermal reflective lining traps and retains your body heat Omni-Wick earband actively breathes and pulls moisture away from your skin