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- Mar 14, 2009
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The downside to this is that in many circumstances it can be near impossible keeping your clothing functionally warm. Unanticipated dunks, heavy sweating under rain gear that leaves you as wet as the rain itself and wet snow can make cause failure in clothing that otherwise should easily meet the task of keeping you warm.
This is a really good point, and reminds me of another issue I've dealt with during longer trips in very cold weather. If you are out for more than a week or so on consistently sub-zero temperatures with a down bag, you're going to get ice in your bag. It's just dang near impossible to prevent - you perspire during the night, the vapor passes through the bag, and freezes on the outside. As you spend more days below freezing, the ice will build up inside the down, and start to rob you of your warmth.
If the weather is consistently bad, and you can't use the sun to dry and thaw your bag, you can get into a heap of trouble if you don't have the ability to build a fire. Now, granted, most "hiking" doesn't involve extended alpine trekking or dog sledding in the arctic, but it drives home the extra challenges of cold weather, and how important fire can be in those environments, no matter how much fancy modern gear you have with you.