Personalized Nanotechnology Toddler T-Shirt. Nano Technology is huge text with a magnifying glass on Toddler T-Shirt - Natural make a funny science gift design for engineers, scientists and technicians working with the smallest structures. 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.