Natuworld Cotton Bucket Hat Camouflage Round Brim Boonie Bush Safari Fishing Hat Cap Summer for Unisex Men Women Material: Soft Cotton One size ,best fit from 23" - 24" head circumference With cord lock?strap?around the hat to adjust size and added style,detail 4 Grommet eyelets with mesh screen for breathable Great for all summer outdoor activities(Fishing, Camping, Hiking, Beach, Picnics.etc)