It looks like a muck boot to me. I'm not sure what they were made of in early 20th century Russia. Today, they are made of rubber (neoprene).
This figure does look very useful.
G9
I see what you mean Dave. Kind'a Frankenstein-ish.
The oxide red could be clay but, I'm not sure about the texture.
Felt or lambs wool?? Maybe someone who has seen older muck boot from Russia could tell us.
G9