Personalized I'm One Derful Newborn Layette. I'm One Derful! Pow! Wow! First birthday comic book style for your wonderful little superhero. Great 1st birthday present. 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