Personalized Math Counts Black Newborn Layette. Math, the only subject that counts is a humorous math design with a double meaning. Fun gifts for mathematicians, students and teachers at birthdays, holidays, graduation and back to school. 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