I learned using a small boat in S.E. Alaska winters that it is hard to find gloves that stay dry and warm at the same time. Freezing rain, salt spray, rain the temperature dropping below freezing all worked to defeat gloves during an hour in an open boat. I learned that inserting a pair of dishwashing gloves inside ineffective winter gloves that get wet- something like ski gloves, actually works reasonably well to keep hands warm in adverse circumstances.
Keeping the water from making skin contact is the reason that works. Of course if the gloves actually freeze solid so would hands tend toward the same, yet it marginal conditions wet gloves still serve as an insulator that is reasonably effect preventing the water from conducting heat away from the body. Water is 300 times thicker than air and removes heat in about the same proportional speed. Wouldn't rubber socks serve the same purpose in boots that aren't effective in slush?
If rubber socks were made and kept in a small packer for emergency use to fir over regular stockings when boots become wet, feet might remain warm in slushy snow. One should avoid trenchfoot for it messes up nerves in the feet pretty well.
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