The Sportful Helmet Liner is minimal-bulk cold weather cap designed to the winter cold, the autumn rain, and the Spring sun, from impeding your ride. Made from GORE-TEX INFINIUM™ fabric the body of the hat is fully windproof and waterproof while being highly breathable, so you don’t have to worry about overheating even when the efforts intensify. Sportful has used its ThermoDrytex fabric over the ears which will keep the wind and rain at bay and allowing more sound through too. The peak gives the Liner a classic look while providing protection from the sun and the elements.