Personalized World's Coolest Chemist Toddler Full Zip Hooded Jacket. World's coolest chemist text with a snowman holding a bubbling beaker is a funny design for chemists, students and teachers at birthdays and holidays. 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.