Personalized 1st Birthday Robot Newborn Layette. Happy 1st Birthday! Celebrate your baby's first birthday with this cute robot. Happy birthday 1-year-old. 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