Keep the sun at bay with our Baseball surf hat, made from eco-friendly recycled nylon, featuring a breathable mesh top and a neck sunshade flap for ultimate comfort and a secure fit. Features: 100% Nylon Unisex Style Embroidered CHILLHANG logo Adjustable Chin Strap with Imported DURAFLEX Buckle Neck Sunshade Flap for Extra Neck Protection Elastic Drawstring at Back for Adjustable Size Eco-friendly sustainable materials to keep you fresh Size: Adjustable Fit Head Circumference: 55-59cm / 21.65-23.23 inches Brim: 7cm / 2.8 inches The size can be freely adjusted (best wearing head circumference 55-59 cm or approximately 21.65 - 23.23 inches).