Personalized Chemistry Small Heart Toddler Full Zip Hooded Jacket. Chemistry text with a heart dotting the i in chemistry is a fun gift design for teachers, students and chemists at back to school, birthdays, holidays and graduation 7.5 oz., 60/40 cotton/polyester. Jersey-lined double-needle hemmed hood. Pouch pockets for all their treasures. Coverstitched shoulders and armholes. Coverstitched rib waistband and cuffs.