Personalized That's right! You're my best friend! Newborn Layette. Show off your bestie with That's right! You're my best friend! Newborn Layette - Heather, featuring Dog and Mouse from the children's book "Dog and Mouse" by Michelle Nelson-Schmidt. 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