CornerStone - Short Sleeve SuperPro Twill Shirt. SP18Our hardest-working shirt is simply super. Built to withstand the wear and tear of any tough job, our SuperPro Twill is also brushed for softness., 4.6-ounce, 65/35 poly/cotton with stain-release finish, Rental-friendly, Button-down collar, Dyed-to-match buttons, Left chest pocket, Back box pleat