Self 1: 100% cotton Self 2 & Sweatband: 100% polyester; Made in Vietnam; Spot clean only; Adjustable back strap; Mesh back panel; Front patch detail; Brim measures approx 2.75" in length OS measures approx 23.55" in circumference; Revolve Style No. SPRO-MA43; Manufacturer Style No. SPCH126S36AZZ "