Mail Carrie Fuel Shirt - USPS United States Postal Service Worker Postal Wear Post Office Postal Shirt - Short Sleeve Unisex T Shirt Adult Unisex Softstyle® 4.5 oz. T-Shirt -4.5 oz., 100% preshrunk ring spun cotton -Antique colors & Sport Grey: 90% ring spun cotton, 10% polyester -Graphite Heather is 50% ring spun cotton, 50% polyester -Heather colors: 65% polyester, 35% ring spun cotton -Double-needle stitched sleeves and bottom hem -Taped neck and shoulders -Modern Classic Fit