Personalized Mechanical Engineer Gear Long Sleeve T-Shirt. Mechanical Engineer text on a gear for the engineer whose mental gears are always turning out new and better ideas. A unique gift design for mechanical engineers and engineering students at back to school, birthdays, holidays or 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