Front: 100% Cotton Back: 98% Polyester 2% Spandex Mesh , Structured, Firm Front Panel, Flexible Fit. 6 Panel Cap; 6 Sewn Eyelets; Pre Curved Visor; 6 Rows Stitching on Visor; Matching Fabric Undervisor; Stretchable Performance Sweatband: Moisture Wicking / Anti-Odor / Antibacterial; 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")