Comments on: Belay jacket – concept and use in the less than vertical world http://chrisechterling.com/blog/2009/09/09/belay-jacket-%e2%80%93-concept-and-use-in-the-less-than-vertical-world/ Climbing, Backpacking, Photography Thu, 07 Apr 2011 12:24:59 -0700 hourly 1 http://wordpress.org/?v=3.1.1 By: Barry Thomas http://chrisechterling.com/blog/2009/09/09/belay-jacket-%e2%80%93-concept-and-use-in-the-less-than-vertical-world/comment-page-1/#comment-479 Barry Thomas Mon, 15 Mar 2010 03:58:20 +0000 http://chrisechterling.com/blog/?p=160#comment-479 Chris: I have a DAS Parka and various fleece layers which I have successfully layered for comfort down to around zero degrees; however, I have plans on climbs in the Himalayas and Alaska where temperatures can often hit the -20 to -40 range and I would like to know if you think synthetic layering is still viable in such low temperatures? All of the gear lists that I have reviewed for expeditions to these areas require down suits or heavy down "expedition" parka/pant combinations. I could be wrong, but I assume the temperatures are so low at very high altitudes in these environments that sweat caused wetting-out of the down garments is not a problem like it would be at lower altitudes or in very wet and "somewhat" less cold environments such as Patagonia where you have a great deal of climbing experience. Regards, Barry Chris:
I have a DAS Parka and various fleece layers which I have successfully layered for comfort down to around zero degrees; however, I have plans on climbs in the Himalayas and Alaska where temperatures can often hit the -20 to -40 range and I would like to know if you think synthetic layering is still viable in such low temperatures? All of the gear lists that I have reviewed for expeditions to these areas require down suits or heavy down “expedition” parka/pant combinations. I could be wrong, but I assume the temperatures are so low at very high altitudes in these environments that sweat caused wetting-out of the down garments is not a problem like it would be at lower altitudes or in very wet and “somewhat” less cold environments such as Patagonia where you have a great deal of climbing experience.

Regards,
Barry

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