Made of 90% cotton and 10% polyester. One size fits most with chin buckle closure, fitting up to 7 1/2. Crown measures 5 inches deep,4 panels, fully lined inside. Bbill measures 3 1/2 inches long with 2 snap bottons on front crown. Soft bill, earflaps measure 8 inches long with chin strap closure. Available in black and khaki. Hand wash o...