Personalized Cute First Birthday Monster 1 Year Old Newborn Layette. Babys 1st birthday design with balloon and monster on a Newborn Layette - White 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