These furry slippers are so soft. I have not found out what type of fur they are made from. The bottom is a hide, and the inside looks and feels like wool. The outside is a long light brown fur. Very soft. These look like they have never been worn. They are marked "25" on the bottom, a European sizing for a child's foot. The bottoms are 5 1/4" long. I found them at an estate sale in Seattle, WA. Along with numerous vintage Russian and Alaskan items. So they may be from one of those regions. They are not brittle. They could be worn now.