Made of 72% cotton and 28% polyester, 100% polyster lining. One size fits most with chin snap closure, fitting up to 7 3/8. Size adjustment buckle in the rear. Crown measures 4 inches deep, bill measures 1-3/4 inches long. Soft bill, earflaps measure 5 inches long with chin strap snap closure. Rugged and rich sherpa lined, cotton with lo...