Front: 63% Cotton 33% Polyester 4% PU Back: 65% Polyester 35% Cotton, Structured, Firm Front Panel, Low-Fitting. 6 panel cap; Seamed Front Panel with Full Buckram; 6 Sewn Eyelets; Pro Stitch on Crown; 6 Rows Stitching on Visor; Matching Color Undervisor; Matching Color Sweatband; Adjustable Hook & Loop Closure; Size:OSFM - Adult (58cm/22.8")