Personalized Boss Vintage Long Sleeve T-Shirt. Boss Long Sleeve T-Shirt - Black has retro look vintage label design that says Premium Quality Boss. Great for a friend or a retirement party idea. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL