Personalized Oom-Pa Newborn Layette. Oom-Pa tuba playing dad is a humorous music design. Fun gifts for low brass playing fathers and grandfathers at Father's Day, birthdays and holidays. 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