Personalized Irish Rock Newborn Layette. A dancing rock holding a shamrock is a humorous design for St. Patrick's day, Irish and Celtic festivals and birthdays. 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