davesenesac
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Post by davesenesac on Nov 19, 2016 17:16:08 GMT -8
Something that ought be mentioned about putting cold feet or hands into even the most insulating down gloves or boots is that if one's blood circulation to those extremities is relatively poor, they may hardly warm up at all because insulation will maintain whatever is inside at whatever temperature it is at. Thus if feet are cold it may keep them cold. There are times when I am inside my sub zero degree winter bag when my upper body and torso rise to a pleasant temperature while my feet are doomed to stay cold unless I bother to place them against something warm like a warm part of the bag my mid section was laying on. And even then may need to rapidly rub them against the material for awhile.
I've powder storm skied at resorts for decades and when temps behind passing cold storms leave, temps in the cold clear air may drop down into the 5F to 15F range. In fact that is when the powder is best like cold smoke. Of course motion during skiing, is identical to a wind chill so it is effectively that much colder. Thus dressed like the Pirelli Tire Man with total head gear to protect every small piece of skin except at eyes and nostrils, I'll wear heavy duty down mittens. Sooner or later may need to go into a pocket for something and it can be amazing how fast one's bare hands that were fine can if exposed to the cold air within a minute especially with any wind, become numbing cold.
David
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ErnieW
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I want to backpack
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Post by ErnieW on Nov 22, 2016 9:44:29 GMT -8
Something that ought be mentioned about putting cold feet or hands into even the most insulating down gloves or boots is that if one's blood circulation to those extremities is relatively poor, they may hardly warm up at all because insulation will maintain whatever is inside at whatever temperature it is at. Thus if feet are cold it may keep them cold. There are times when I am inside my sub zero degree winter bag when my upper body and torso rise to a pleasant temperature while my feet are doomed to stay cold unless I bother to place them against something warm like a warm part of the bag my mid section was laying on. And even then may need to rapidly rub them against the material for awhile.
I've powder storm skied at resorts for decades and when temps behind passing cold storms leave, temps in the cold clear air may drop down into the 5F to 15F range. In fact that is when the powder is best like cold smoke. Of course motion during skiing, is identical to a wind chill so it is effectively that much colder. Thus dressed like the Pirelli Tire Man with total head gear to protect every small piece of skin except at eyes and nostrils, I'll wear heavy duty down mittens. Sooner or later may need to go into a pocket for something and it can be amazing how fast one's bare hands that were fine can if exposed to the cold air within a minute especially with any wind, become numbing cold.
David That's thing about booties. Very insulating but low thermal mass meaning they warm up easy. They will also help with that cold foot thing in the sleeping bag. I also found that if I was sleeping soundly my feet would go cold waking me up. I would wear my booties in the morning getting ready then when we were just about to get going I would put on my frozen cold boots. After 10-20 minutes of hiking and generating body heat I could feel my capillaries in my feet open up and heat go into my boots. After about an hour of hiking my feet/boots would be toasty warm for the rest of the day.
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