SIZING: Small/Medium 6 7/8" - 7 1/4" or Large/X-Large 7 1/4" - 7 5/8" STRUCTURED FIT: This cap has a firm structure to the front of the crown STRETCH FITTED: This cap is made by Flex Fit and stretches to fit almost any size comfortably The Oakley Indy Stretch-Fitted Cap features a split front panel and premium breathable mesh panels to provide a personalized fit and maximum ventilation. Made by Flex Fit with a printed polyester front panel and a cool Oakley lock-up logo, this Oakley hat delivers a vintage look with signature style.