Sun Hat Style Sun Visor Garment Type Sun Hat Adjustment Type Drawstring Cord Cooling Yes Maximum Hat Size 7 1/8 Material Polyester Pattern Solid Color Green Size S/M Maximum Head Circumference 22 1/2 in Maximum Cooling Time Up to 4 hours Cooling Method Evaporative - Soak Features Drawstring Cord Enhanced Visibility Lightweight Sun Protection PVA Cooling Technology Material Style Mesh Minimum Head Circumference 21 in Standards ANSI 107