● 100% Polyester ● 100% Polyester Fiber ● Hand Wash ● One Size Fits All: We Use Stretchable Materials So That Can Adapt To Various Head Shapes,whether Small Head Or Big Head Even Basketball Head.suitable For Most Women & Men. ● This Skull Cap Is Equally At Home As A Cold-weather Fashion Statement Or As A Last Resort Against The Sleeting Hail You Experience As You Chop Firewood, Win Extreme Marathons Or Dig Wayward Skiers Out Of Avalanches. ● Each Black Beanie Is Compact, Lightweight And Infinitely Comfortable, Yet They're Durable Enough To Survive A Trip To The Ice Caps Of Mars And Back.