Personalized First Birthday Outfit Mock Tuxedo Im One Newborn Layette. I'm one cute mock tux bow tie Newborn Layette - Black for boys turning 1 year old and celebrating their 1st 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