Their is actually no names it called that
yes it is waterproof. they coat their fur with castoreum to make it waterproof.
Unfortunately, you cannot waterproof a coat by yourself (safely). However, you can try going to a clothing professional, who may be able to waterproof your coat, for a fee of course.
1823
One will find after doing some online research that a waterproof coat (or jacket) can be purchased through the online websites Moosejaw, and Go Outdoors.
Wax
"What is the name of a Inuit snow house?" The Inuit word for an Inuit snow house is Igluvigak.
The inuit invented dogsledding, kayaks, toggle-head harpoons with floatlines, parkas, snow goggles, fully waterproof clothing, mukluks, igloos, sleeping bags.
Charles Macintosh invented the waterproof coat in 1824
The Inuit name for early ancestors is 'tunit.'
Fleece Waterproof Coat Waterproof Trousers Thermal Vest Ski socks Balaclava Hope this was helpfull.
Wax.
A Waterproof dog coat can be bought from most pet stores such as Petsmart or PetsRUs. They can also be bought online through Amazon. They do come in a variety of sizes which are mentioned in the listings.