3 ms·
Long distance snow walkers (snowshoes/backcountry skis) will take the opposite approach. Oversized insulation + air permeable shell. Oversized clothing allows
by germinalphrase 7y ago
Long distance snow walkers (snowshoes/backcountry skis) will take the opposite approach. Oversized insulation + air permeable shell. Oversized clothing allows for complete ventilation when needed/possible. Air permeable shell allows vapor to escape or freeze onto interior surface and flake off under movement.
As for light/fast: I’ve worn a small running fanny pack with an emergency blanket and whistle at times.
- londons_explore 7y agoI don't really understand this 'breathable' clothing from a physics perspective. Every liter of water lost through breathable clothing is 2.3MJ of lost heat. So one would presumably prefer to have non-breathable clothing, keep that water in and potentially get 'clammy', yet stay warmer. Yet nobody seems to do this. Is there a physics based reason other than 'it feels icky and is uncomfortable'? Perhaps because even when in very cold environments there are occasions when the body is too hot and needs to loose heat?
- germinalphrase 7y agoWet clothing is a life threatening situation in the backcountry. Intentionally venting excess heat is common and not at all a concern for snow walkers.
- thinkingemote 7y agoSome cold weather gear works on that principle. Synthetic string vest for example, keeps you warm even when sweaty. It dries off quickly too when you are no longer sweaty. The main thing is that you are warm and never cold and that you shouldn't worry about soggy undergarment.