Port Authority S664 Short Sleeve Superpro Twill Shirt - BlackPort Authority S664 Short Sleeve Superpro Twill Shirt A heavy hitter in performance, our SuperPro Twill Shirt easily resists stains and wrinkles while releasing stains. Designed for comfort, this versatile shirt functions well in almost any work environment from the office to food service. 3. 4 ounce, 55 45 cotton poly Button down collar Back shoulder pleats Dyed to match buttons Left chest pocket Coordinating S664 L664 L665 L663 S663 Sizing Chart