21.5 Head circumference. UNISEX DESIGN: Looks amazing on both Men & Women.$32.99 MSRP. 100% PREMIUM COTTON TWILL – One of the BEST Military Caps you will find on the market.DISCREET POCKET – We put a lot of thought into this hat and spared no expense. We placed a pocket within the inside lining that is perfect for storing spare cash, credit cards, IDs, etc. Perfect for the beach, or poolside.FLOCKED CROWN DESIGN – Luxuriously Flocked & Distressed SUEDE Wing Design Place On The Crown Of This Hat.3D PRINTED DESIGN & STAR EMBELLISHMENTS – 1MM thick printed design for SUPREME DURABILITY.