Front: 97% Polyester / 3% Spandex Back: 100% Polyester Structured Firm Front Panel Flexible Fit 6 Panel Cap Seamed Front Panels with Buckrum Pro Stitch on Crown 6 Sewn Eyelets on Crown 6 Rows of Stitching on Visor Matching Fabric Undervisor Stretchable Comfy Fit Sweatband: Moisture Wicking, Anti-Odor, Antibacterial Adj. Smooth Hook & Look Closure OSFM - Adult (6 1/2 - 7 5/8)