This Rawlings trucker hat has a 100% performance polyester front with a mesh back. This hat features a new liquid embroidery Heart of the Hide logo which is created using a molded, hi-tech polymer material, liquid embroidery provides extreme design detail, amazing texture, as well as vibrant colors. S/M: 6 7/8" - 7 3/8", L/XL: 7 3/8" - 8"