Home Prefer Men's Sun Hat Wide Brim Light Weight Fishing Hat with Neck Flap polyester Imported 100% Polyester, breathable & quick-drying & lightweight & durable 4" long bill flap, 5" back flap for neck protection, side mesh crown for cooling vents Adjustable buckle enable the custom fit of head girth 56-60cm (22"-23.62") UPF 50+ for ultimate sun protection, blocks 98%+ of damaging UVA/UVB sun rays Perfect for any outdoor activities: fishing, hiking, camping, hunting, gardening, boating etc