Fast dry, light weight, and breathable, skin friendlyeat absorption and elastic to well fit your headFastening: ElasticBeanieSpecially designed to wear under helmet, reduce shock from helmet when cyclingYou can use it when your are running, cycling or motorcyclingPackage contain 1pc under helmet beanie hatFast dry, light weight, and breathable, skin friendlyeat absorption and elastic to well fit your headFastening: ElasticBeanieSpecially designed to wear under helmet, reduce shock from helmet when cyclingYou can use it when your are running, cycling or motorcyclingPackage contain 1pc under helmet beanie hat