Rothco's Vintage Military Fatigue Caps are inspired by the classic military uniform fatigue cap dating back to the 1960's. The vintage military hat features a washed-out cotton/poly fabric. Model: 4508 Color: Olive Drab 55% cotton / 45% polyester Fitted Sizes: Small through X-Large Sizing: Small (7), Medium (7.25), Large (7.5), X-Large (7.75)