Be ready for the ballgame in our throwback Classic Safety Shirtz baseball cap. With a style that captures the nostalgic feeling of early Seattle baseball, this design is sure to make you stand out the next time a fly ball comes your way. 97% Cotton, 3% Spandex. 6-Panel, Structured, Low-profile. Royal Blue Solid-Colored Cap. Airmesh Side & Back Panels. Stitched Eyelets. Pre-curved Bill.