They’re made by a company called Dav, which I’d never heard of, till a friend sent me the link. There are some pretty hot rain boots on there, if you can imagine such a thing. I know some people (especially in the UK) have a problem with the concept of rubber boots outside of the field wellies context, but in continental Europe and the US people are more open minded about the use of rubbers and plastics for fashion footwear.
Free your boots and the rest will follow.
You can get these from Dav.