Unisex Sun Cap: Perfect For Various Outdoor Activities, Such As Hiking,Fishing,Camping,Hunting And open air work. Fold: 360 degrees azimuth Flaps, against mosquito design(Flaps are removable).Adjustable Draw String/Adjustable Chin Strap. Helps Keep The Hat On Your Head On Windy Days. Sun security: UPF 50+ UV beam insurance. Venting network On The Sun Hat Make Your Head Feeling More Breathable. Material: Quick-drying texture. Cap Brim:3.15 inch. Head circumference:21.5 inch- – 25.9 inch Adjustable Size.