Vintage 1920’s hard to find rare ladies black overboots. (to be worn over hollow heeled shoes). I found a similar pair in a fall/winter 1927-1928 national bella hess co. They advertise them as : one-buckle artic. Bottoms are of heavy quality rubber with non slip corrugated rubber sole and heel. The ones in the catalog are fleece lined. Condition: these have been worn. I note a slight indentation by the toe area on the left boot (see pix). Marked size: 5 1/2 w (but they measure larger because they are to be worn over hollow heeled shoes). Sorry for this inconvenience. This item is made of fabric and rubber.