Personalized Rocket Scientist Gift Long Sleeve T-Shirt. Funny Rocket Scientist Long Sleeve T-Shirt - Black with hand drawn space rocket ship and yes I'm a rocket scientist quote. 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