FastSplit by Headsweats with Tri Bug embroidery 100% CoolMax® Polyester Fabric The most comfortable sports hat you will ever wear 100% machine washable Ultra low weight - less than 2oz - 58g INVISTA® certified UPF sun protection We recommend using sunscreen for maximum protection CoolMax® Comfort System Pulls moisture away from your skin. Dries 3 to 4 times faster than cotton. The CoolMax® terrycloth sweatband has loops that increase the surface areas for incredible moisture transfer.