Personalized Cute Submarine Ocean Explorer Long Sleeve T-Shirt. Cute little submarine Long Sleeve T-Shirt - White under sea ocean themed gift for kids. 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