Noticed this discussion as Expedition Medicine is quoted as a source of information and I am one of the founders of Expedition Medicine
I noticed you have already brought a sleeping bab now and a closed cell mat - which is great. Keeping warm at night is one of your most important challenges when operating in Polar conditions and effects your whole experience including your ability to operate effectively during the day, if you are cold at night you burn more calories keeping warm and combined with a restless night builds fatigue.
Generally down sleeping bags keep you warmer however in Polar conditions synethic bags - which are more bulky, tend to much better as down gets affected by the build up of body moisture ( sweat and exhaled breath ) which then freezes and causes the down to loose its insulation effect.
Try if you can to get the best bag you can afford/ carry and one with a zip at least half way down the bag so that if you are in a cabin with a wood burner for the night you dont expire from heat exhaustion!
A lot of heat at night is lost through the head so a bag with a hood is great and also a nightime cap
If you are outside camping and you have the equipment a bottle to use for night time pees is a useful addition to the kit list as it saves leaves the warmth of your tent!!
Hope this helps
Please let us know if there is any other 'useful' info we can add to the website Expedition Medicine
I noticed you have already brought a sleeping bab now and a closed cell mat - which is great. Keeping warm at night is one of your most important challenges when operating in Polar conditions and effects your whole experience including your ability to operate effectively during the day, if you are cold at night you burn more calories keeping warm and combined with a restless night builds fatigue.
Generally down sleeping bags keep you warmer however in Polar conditions synethic bags - which are more bulky, tend to much better as down gets affected by the build up of body moisture ( sweat and exhaled breath ) which then freezes and causes the down to loose its insulation effect.
Try if you can to get the best bag you can afford/ carry and one with a zip at least half way down the bag so that if you are in a cabin with a wood burner for the night you dont expire from heat exhaustion!
A lot of heat at night is lost through the head so a bag with a hood is great and also a nightime cap
If you are outside camping and you have the equipment a bottle to use for night time pees is a useful addition to the kit list as it saves leaves the warmth of your tent!!
Hope this helps
Please let us know if there is any other 'useful' info we can add to the website Expedition Medicine
