Personalized Shamrock Music Notes Light Greens Newborn Layette. A shamrock comprised of green and yellow music notes is a fun design for family and friends during the March holiday of St. Patrick's Day and Celtic festivals. 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