Camo Coll Women's Fashion Sun Hats with Adjustable Chin Strap 100% Polyester; Breathable Fabric Diameter(inch): 7.5 inner, 13.5 outer 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 in the Sun