Personalized Mouse Newborn Layette. A great finder, a great helper, and a great friend. Mouse Newborn Layette - Red from "Dog and Mouse" by Michelle Nelson-Schmidt wants to help, not because she has to, but because she wants to. 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