Personalized Mouse 'n Cheese Newborn Layette. A happy mouse hugging a block of Swiss cheese is a fun design for chefs, cooks and cheese lovers at 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