Personalized Sailing Captain Keep Calm And Command Long Sleeve T-Shirt. Nautical gift Long Sleeve T-Shirt - Vintage Black for sailors and shipmasters who love going on sea adventures. 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