Personalized Mechanical Engineer Gear Toddler 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. A toddler-soft cotton tee in look-at-me, big kid colors. 4.5 oz., 100% combed ringspun cotton. White is sewn with 100% cotton thread. Topstitched rib crew neck. Double-needle stitched sleeves and bottom hem. Shoulder-to-shoulder taping.