100% Polyester Front 100% Polyester Mesh Back The Traditional Look 5-panel cap Seamless Foam Front Panel with Lining Matching Color Braid 8 Rows Stitching on Visor Matching Fabric Undervisor Matching Color Sweatband Plastic Adjustable Snap OSFM - Adult (6 1/2 - 7 5/8) Fully adjustable snap back closure. One size fits most.