Personalized Big Brother Muscles Newborn Layette. Big Brother! Protects his little siblings from all the bad stuff in the world. Great gift for your little hero! 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