Personalized Big Brother Long Sleeve T-Shirt. Big Brother! A cool T-Rex big brother dinosaur stomps around letting everyone know he's the king! Fun gift for any big bro. 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