West Biking Skull Cap, Winter Fleece Bicycle Helmet Liner/Running Beanie - Ultimate Performance Moisture Wicking for Youth Adult MTB Road Cycling Skiing polyester COMFORTABLE MATERIAL - West Biking Thermal Fleeced 85% Polyester, 15% spandex fleece. LIGHTWEIGHT AND A VARIETY OF USES - Stretchy, breathable fabric wick sweats away. Wear our skull cap on its own or under your helmet. Wear it as you ride, snowboard or ski. Wear it as you run, work out or play football. Heck, wear it as you're doing laundry. It's so lightweight and comfortable you'll forget you're wearing it. Like you, this skull cap is ready for duty. ONE SIZE FIT ALL - Our skull cap beanie will fit comfortably, even if you have an one-size noggin.It comes in Black with yellow,red or gray. Suit for cycling, running, riding,camping, hiking,outdoors, leisure. Gear designed and constructed to fit perfectly to the body in motion. <span class="a-text-bold">Fabric:</span> West Biking Thermal Fleeced 85% Polyester, 15% spandex fleece. <span class="a-text-bold">Feature:</span> Stretchy, breathable fabric wick sweats away. <span class="a-text-bold">Styles: </span> It comes in Black with yellow,red or gray and it&#039;s one size fits all. <span class="a-text-bold">Occasion:</span> Suit for cycling, running, riding,camping, hiking,ourdoor, leisure. <span class="a-text-bold">Design:</span> Gear designed and constructed to fit perfectly to the body in motion.