95% Polyester 5% Spandex , Structured , Firm Front Panel, Low-Fitting. 6 Panel Cap; Seamed Front Panel with Buckram; 6 Rows Stitching on Visor; Matching Fabric Undervisor ; Neon Colors have Black Undervisor; Cool Comfort Performance Sweatband: Moisture Wicking / Anti-Odor / Antibacterial; Moisture Wicking & UPF 50; Quick Release Smooth Hook and Loop Closure; Size: OSFM - Adult (58cm/22.8")