Personalized Big Brother Super Hero Newborn Layette. Pow! Big Brother Super Hero is here to save the day! Bright and bold comic book style great for any super big brother. 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