Personalized Pink Screw Loose Long Sleeve T-Shirt. Mechanical Engineers are brilliant. No one would ever remark that they had a screw loose somewhere! A subtly funny gift design in pink for birthdays, holidays and graduation. 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