Mesh back. Pre-curved visor Structured, six-panel, low-profile Snapback closure. 65/35 cotton/polyester Heather Grey is 10/55/35 wool/acrylic/polyester Mesh back. Pre-curved visor. Structured, six-panel, low-profile. Snapback closure. 65/35 cotton/polyester. Heather Grey is 10/55/35 wool/acrylic/polyester.