Personalized Dog Newborn Layette. What a good pup! Dog Newborn Layette - Heather from Michelle Nelson-Schmidt's children's book "Dog and Mouse" is looking for a friend that's loyal and true. Could it be you? 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