Personalized Blue Marching Band Sport Newborn Layette. Marching Band, the sport for intelligent people is a humorous gift design for band geeks at birthdays, holidays and band camp. 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