95% Polyester 5% Spandex , Structured , Firm Front Panel, Low Fitting. 6 panel cap; Seamed Front Panel with Full Buckram; Pro Stitch on Crown; 6 Rows Stitching on Visor; Matching Color Undervisor Except for Neon Colors; Stretchable Performance Sweatband: Moisture Wicking / Anti-Odor / Antibacterial; Moisture Wicking & UPF 50; Enclosed Closure; Available in S/M (56cm -59cm/7 - 7 3/8 /22" -23.2") & L/XL (59cm - 62cm/7 3/8 - 7 3/4 /23.2" - 24.4")