63% polyester, 34% cotton, 3% spandex combed twill 6-panel, structured, mid-profile wool-like texture 3½" crown hard buckram backed front panels sewn eyelets; eight-row stitching on bill spandex sweatband retains shape; Silver underbid Size: S/M ( 6 3/4" - 7 1/4") & L/XL (7 1/8" - 7 5/8") & XL/2XL (7 3/8" - 8")