Personalized Dog and Mouse Best Friends Long Sleeve Creeper. Friends are always there for you - rain or shine. Dog and Mouse Best Friends Long Sleeve Creeper - Mauve features two scenes of this budding friendship from "Dog and Mouse" by Michelle Nelson-Schmidt. For chillier weather, dress baby in this soft long sleeve creeper in a great fitting 1x1 baby rib. 5.0 oz., 100% combed ringspun cotton, 1x1 baby rib. White is sewn with 100% cotton thread, Flatlock seams, Double-needle stitched rib binding on neck, shoulders, sleeves and leg openings,Reinforced three-snap closure on binding.