Personalized 1st Birthday Race Car Boys Newborn Layette. 1st Birthday race car boys Newborn Layette - White has this little racer is one bday slogan with a colorful racing car and number 1 logo. 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