Front: 60% Cotton 40% Polyester Back: 100% Polyester Mesh, Structured, Firm Front Panel, Low Profile. 6 Panel Cap ; Seamed Front Panel w/ Buckram ; 2 Sewn Eyelets/ No Eyelets on Mesh; 6 Rows Stitching on Visor ; Matching Sweatband ; Plastic Snap Closure; Size:OSFM - Adult (58cm/22.8")