97% Polyester 3% Spandex , Structured , Firm Front Panel , Low Fitting . 6 panel cap; Pre Curved Visor; Seamed Front Panel without Buckram; Matching Fabric Undervisor; Cool Comfort Performance Sweatband: Moisture Wicking / Anti-Odor / Antibacterial; Moisture Wicking & UPF 50; Quick Release Smooth Hook & Loop Closure; Size:OSFM - Adult (58cm/22.8")