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Extending temp. Range of sleeping bags
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<blockquote data-quote="Litehiker" data-source="post: 1291025" data-attributes="member: 54178"><p>Rocky,</p><p></p><p>Talking to REI folks is a crapshoot. Most have little cold weather experience and a few have a lot. </p><p></p><p>That said what REI people are saying is that wearing insulated clothing inside a sleeping bag often can compress the bag insulation, defeating the loft (thickness) and working against your attempt to get warmer.</p><p>BUT... this is only true for bags that are just barely large enough for you when you wear, say, long johns.</p><p></p><p>Len and Andy and I all have bags designed (in different ways) large enough to accommodate a puffy jacket and pants <em>without</em> compressing our bag's insulation. Thus we have more insulation around us.</p><p></p><p>It's kinda "The Law of Insulation" that thickness of insulation gives more warmth. </p><p></p><p>Eric B.</p></blockquote><p></p>
[QUOTE="Litehiker, post: 1291025, member: 54178"] Rocky, Talking to REI folks is a crapshoot. Most have little cold weather experience and a few have a lot. That said what REI people are saying is that wearing insulated clothing inside a sleeping bag often can compress the bag insulation, defeating the loft (thickness) and working against your attempt to get warmer. BUT... this is only true for bags that are just barely large enough for you when you wear, say, long johns. Len and Andy and I all have bags designed (in different ways) large enough to accommodate a puffy jacket and pants [I]without[/I] compressing our bag's insulation. Thus we have more insulation around us. It's kinda "The Law of Insulation" that thickness of insulation gives more warmth. Eric B. [/QUOTE]
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Extending temp. Range of sleeping bags
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