cooling cap / helmet liner / skull cap / running beanie - ultimate performance moisture wicking. fits under helmets blue osfm tough headwear <p><b>tough headwear</b> is a trusted brand providing premium quality and functional outdoor essentials. we bring you the skull cap tailor-made for your active lifestyle!</p><p>our helmet liner is made possible by advanced moisture wicking technology that absorbs and rapidly evaporates sweat tested under extreme sports. it is highly recommended as liner under athlete helmets and hard construction hats providing both comfortable cushion while preventing sweat from stinging the eyes.</p><p>infused with instant cooling properties, our skull cap helps relieve stress from heat. our fabric is also made with upf 45 for your ultimate protection from sun damage. it is lightweight, durable and has added ventilation for maximum comfort. great to use for any helmet sport or even as an everyday wear essential!</p><p>it is extremely durable, made of polyester (89%) and spandex (11%), and easy fit.