Iplay Baby Infant Toddler Unisex Solid Color Flap Sun Hat / Beach Hat by Iplay 100% Polyester Machine washable. Special sun protective fabric offers excellent sun protection. Ties under chin. Flap hats are baseball hats with a longer neck flap for great sun protection. Sun hats help protect little faces from the sun's harmful rays. Flap hats protect kids heads, faces, and necks.