70 Acrylic
30 Polypropylene
Brushed Heatwave band lining

Heatwave™ hats harness the amazing heat-reflective power of Heatwave™ technology in a soft, stylish, and powerfully warm beanie. A band of Heatwave™ lining runs around the base of the beanie to amplify warmth in one of the most notorious heat loss regions of the body.