Personalized Chemistry Egghead Toddler T-Shirt. An egghead wearing safety glasses and holding a beaker of chemicals is a humorous design for scientists, teachers and students at back to school, birthdays, holidays and 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.