100% Polyester. Soft to the touch and will definitely keep your head warm when it gets cold outside. You deserve to stay warm, dry, and comfortable. Tickled Pink has a proud tradition of using quality materials to make sure our customers get their money's worth. Along with warmth and comfort, these newboy caps come in a range of colors, so you don't have to sacrifice style to beat the cold. Grab your favorite and head outside, prepared for anything the weather outside brings. Spot clean only.