You won't be as warm in pants and a jacket as you would be in a sleeping bag of comparable design (amount and type of insulation) because of the way the bag retains your body heat compared to sleeves and pant legs. With a bag, your whole body is heating up the still air in a single compartment, which is insulated from the outside air by the bag.

I extend the range of my bag by using an overbag or tossing my parka over it. I have a deep winter parka that is about as bulky as my bag; I'm wearing it in my picture. I could sleep in just my insulated pants and parka, but I'd only do that in some kind of emergency where I was day hiking, had my cold weather gear, but no bag with me and got caught out.





Edited by TomD (05/02/10 02:33 AM)
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