Personalized North Pole 1st Birthday Newborn Layette. Newborn Layette - Pink for a little elf's 1st birthday with a polka dotted number one and red and white striped North Pole sign. Perfect for Santa's helper on his or her Christmas birthday. 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