Yquelle Mountain Climbing Bandana Cap Fabric : polyester mesh fabric, high elasticity, soft, comfortable, dryline fabric absorbs sweat Friction between the head and helmet, protection against dust, moisture, Wicking, breathable, antibacterial One size fits most,comfortable to wear under hats, helmets or alone Suitable for biking, shopping, play ball, roller derby, Can be used as a headband, cap, beaniewind or dust screen, pirate-style cap, scarf or a helmet liner 3D honeycomb birds-eye cloth.Using wicking breathable fabric,keep your head during intense sports breathable,perspiration,dry.