Personalized Helping? That's my favorite and very best skill!- Mouse Newborn Layette. Great helpers come in all shapes and sizes. Helping? That's my favorite and very best skill!- Mouse Newborn Layette - Heather, perfect for fans of "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