Personalized Race Car 1st Birthday Newborn Layette. Race Car with the number 1 on it for a baby boy 1st Birthday is fun and colorful and comes on a party Newborn Layette - Heather gift. art c. Ne Metzger 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