Personalized Mechanical Engineer Flowers Long Sleeve T-Shirt. It's flowering time in mechanical engineering land with posies made of gears, screws and tubing. A humorous design for gifts at 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