evo.com | Pearl Izumi Ball Caps > P.R.O. Barrier Forehead Panel P.R.O. Thermal Dry Fabric This provides warmth and optimal moisture transfer, dry time and water resistance. Fits Easily Under Helmet Main Body 90% Polyester / 10% Elastane Front 100% Polyester | Pearl Izumi Barrier Skull Cap 2021 in Black | Elastane/Polyester