Personalized Leprechaun Happy St Patricks Day Irish Newborn Layette. Happy St Patrick's Day Leprechaun Newborn Layette - Black has Irish greeting for baby's 1st St Paddys Day celebration. 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