Front: 80% Polyester 20% Cotton Back: 100% Polyester Mesh, Structured, Firm Front Panel, Low-Fitting. 6 panel cap; Seamed Front Panel with Full Buckram; Pro Stitch on Crown; 2 Sewn Eyelets; 6 Rows Stitching on Visor; Matching Fabric Undervisor; Matching Color Sweatband; Plastic Snap Closure; Size:OSFM - Adult (58cm/22.8")