John, thanks for the pointer to
Sealskinz. They look like very interesting winter activity wear.
But I am wary -- (quoting
this page) their "
Middle layer: Waterproof MVT (Moisture Vapor Transpiration), allows perspiration to escape while not allowing water to penetrate" would subsequently allow vapor to collect in the outer insulating material of my boot.
Since I am trying to keep all perspiration INSIDE, so it does not reach the dry outer insulating felt material, I don't think Sealskinz would work for a multi-day snow trip.
