Personalized I Believe In Santa Newborn Layette. Cute Christmas Newborn Layette - Heather with Santa Claus cap says I BELIEVE IN SANTA JUST BECLAUSE. For anyone who still believes, just because. 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