Gore Bike Wear Men's Universal Thermo Beanie Shell: 84% Nylon, 16% Elastane, Headband: 100% Polyester, Imported Essential: a warming, extremely elastic cap that can be worn under the helmet. Doesn`t irritate or restrict the wearer, and is highly compact for easy packing. Thermo-stretch functional fabric Flat-lock seams Reflective logo on front Reflective piping on back