Personalized Chemistry Cloud Beaker Toddler T-Shirt. A beaker with a bubbling chemical cloud is a unique gift design for 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.