The size increased before they were ever worn. These are room shoes to wrap around the feet of a child just starting to walk. Made with environmentally friendly recycled polyester and a gentle fleece lining. The long-pile fleece can be worn directly on the skin as a substitute for socks. The ankles have a gentle fit with ribbed knit and a slightly longer design that doesn't slip off easily. The soles have a silicone print for a non-slip grip. Size: 10-12cm Colors: Black, Green