Hat Sizing Chart Small 6 7/8  ( 21 3/4 inches ) Medium 7 to 7 1/4 ( 23 inches ) Large 7 3/8 ( 23 1/2 inches ) Extra Large 7 1/2 to 7 5/8 ( 24 1/4 inches ) Sizing material is available on request ( self adhering foam strips will be included with your hat order at no charge if requested in special instructions when ordering )  Please note sizes may vary slightly from one manufacturer to another Use Back Button or page bar to return to page you were viewing