Size/Fit Summary: Fits slightly smaller, Regular fit. Sizing suitable for 18 months to 8 years old (size 5-3). If they are in-between sizes, it is recommended to size up. Our Little Kids Sherpa Shoes are like a slipper for both the indoors, as well as the outdoors. Cozy with a grippy sole, and lined with vegan shearling, these light grey shoes will keep small feet warm on cold days.