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 Performance Sweatband: Moisture Wicking, Anti-Odor, Antibacterial Enclosed Available in Sizes S/M (7 - 7 1/4) and L/XL (7 3/8 - 7 5/8)