Personalized Irish Flag St Patrick's Shamrock Newborn Layette. Irish flag Newborn Layette - White for St. Patrick's Day has shamrock clover in green. 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