According to Brooks-Range, the Rock Shirt is perfect for layering as it features a smooth outerlayer and a “sueded” innerlayer to make if feel soft and comfortable against the skin. It also has a broken in appearance and is built to last with 12 oz. cotton. Made with 80 percent, 12 oz. cotton/20 percent polyester, the shirt also features a ribbed cuff and hem, as well as side vents for ventilation and access. Colors: Slate, Brick, Charcoal, Navy and Light Olive; Sizes: S, M, L and XL.