polytetrafluoroethylene- that's the "inner membrane that allows maximum protection from blustery conditions".
And some design specific items- reversible stainless steel snaps, pass through changing pockets, etc.
Equals $120.
Ironraven, there is a really nice cloak
here If you can get a homeowner's loan to buy it.
Their ad copy is worth the visit even if they do cater to a different clientele................
Seriously, if you know anyone in Southern Cal, there are several places that sell period clothes from film and tv productions, Melrose Avenue, I think, has some outlets for these items......
Falcon, I hear yuh- great concept, I'm going to keep my eyes peeled.......