Personalized World's Coolest Chemist Newborn Layette. 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. 100% combed ringspun cotton 5.8 ounce 1×1 baby rib sleeper. 3/8" flatlock binding at envelope neck and cuffs. Back sleeve flap to protect hands. Elastic opening at bottom. Infant: 0-3 Months