100% polyester and the material is soft Breathable mesh vent keep you cool and comfortable wide brim, head circumference: 21.6"-23.2" (55-59 CM),Adjustable Chin Strap,Adjustable drawcord and toggle at back UPF 50+ excellent sun protection, Anti-UV and vented,Adjustable drawstring for fixing the hat, especially in windy days Great for hiking, camping, tourism, gardening or any outdoor activity