Personalized Teachers Rock Newborn Layette. Teachers Rock with a ribbon of blue is a fun design for your favorite teacher or student teacher at birthdays, holidays, back to school and graduation. 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