Shine bright like a diamond! Shine as bright as a diamond with this original cap! Are you looking for a classic baseball cap model in a fun color with an even more fun design? Cool cap! The cap is made from 100% cotton and has ventilation holes at the top, making it extremely suitable for warmer weather. The cap is a one size fits all that sits extremely comfortably thanks to a FLEXBAND sweatband and VELCRO closure. In short, Cool cap is comfortable all day long in all situations.