Layering sleeping bags??
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So I have mammut down bag EN rated to zero and a custom down quilt from enlightened equipment which had a claimed rating of zero. The quilt has a good 4-5 inches of loft but not sure I'd take it thost low without serious clothes under neath it. Anyway I've trolled and googled and the only ones I can find who have experience with layering is survivalist types not climbers. Anyone one here have experience with one bag on top of the other?? |
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get a sleeping bag liner. |
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I own an older polargaurd delta wide/long and a newer primaloft sport form integral designs. Both 20 degree bags. I have slept out in the open with a solid 15 mph wind in the low teens and been very very warm. I could probably take it down to zero F comfortably with long johns. |
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I've been wanting to do the president traverse in NH in winter. I got that mammut thinking the "us Fahrenheit rating if -17 " would be sufficient, but it's. EN eating, the more reliable one is around 0. But that back country quilt wraps all the way around my bag with me in it |
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how heavy are the two combined? For sub-zero camping I'm usually fine with my 0 or 10 degree bag with a liner in it, and the liner weighs a few ounces so that might be a better option for you. |
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The 2 bags together are heavy,.. 75 oz or so but it gives a good 8" of loft,... |
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I prefer layering for many reasons. I get a ton of different configurations out of 4 bags. |
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adding a ground tarp and folding it over yourself helps hold in a good amount of heat too. Just make sure you leave room for moisture to evaporate. For a while I brought a fleece blanket and put it around me which worked really well. Using spare clothes makes things a tad warmer as well. But layering bags is nice just a lot of weight and lost room in whatever your carrying them in. |
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+1 sleeping bag liner. |
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Danomcq wrote:I've been wanting to do the president traverse in NH in winter. I got that mammut thinking the "us Fahrenheit rating if -17 " would be sufficient, but it's. EN eating, the more reliable one is around 0. But that back country quilt wraps all the way around my bag with me in itI have one friend thats attempted to summit washington in witner and said it was f'ing cold. I would take your zero and sleep in your puffy to save the weight. Though the two bags together aren't that heavy considering sub 5lbs for winter is solid stuff. Biggest problem is makign sure not to compress the insulation so i would use the quilt as an overbag. Scope the weather the week before and go from there. If it gets much below -10 i would take both, anythign above use your puffy and zero bag and maybe a liner if your so inclined. |
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Rock fencer,... I know it's cold as fuck, hence this thread. Last two times I was on Washington windchill was below -50. |
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Danomcq wrote:Rock fencer,... I know it's cold as fuck, hence this thread. Last two times I was on Washington windchill was below -50.yeah, my friend did a small slide show at the gym. Looked miserable...more power to you for that suffer fest!! |
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Hi D, my comment is not related to your question, I am just wondering how you like your EE quilt and what width it is. How big are you, what width is your quilt, and how does cover you when you are sleeping? Danomcq wrote:So I have mammut down bag EN rated to zero and a custom down quilt from enlightened equipment which had a claimed rating of zero. The quilt has a good 4-5 inches of loft but not sure I'd take it thost low without serious clothes under neath it. Anyway I've trolled and googled and the only ones I can find who have experience with layering is survivalist types not climbers. Anyone one here have experience with one bag on top of the other?? |
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The problem with layering one sleeping bag on top of the other is reducing the loft of the lower sleeping bag, compressing it reduces its functionality. Liners don't compress so they offer their rated insulating factor regardless of the weight from above. Bivy bags also don't weight much and can work fine as covers over the sleeping bag without compressing it. My gortex bivy buys me about 10F of warmth, but also traps moisture. Yes, gortex traps moisture like any opther material, it just allows it to escape faster than standard nylon, etc. Over a long night your liner and/or bag could get wet even without a bivy/cover over it (just food for thought). |
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Anyone prefer doubling up on sleeping pads in sub-zero conditions? I haven't tried it yet, i also wish that I would have bought a sleeping bag with the sleeping pad sleeve in it. |
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Harpo, |
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Greg Springer wrote:Anyone prefer doubling up on sleeping pads in sub-zero conditions? I haven't tried it yet, i also wish that I would have bought a sleeping bag with the sleeping pad sleeve in it.Pads are notorious for not being very grippy. I can't imagine getting more than an hour of use from stacking them before they slipped apart and you were left on only one. You could buy a wide cheap foam pad and put a higher quality pad on top of it, foam pads tend to be less slippery than most modern sleeping pads. But foam pads are bulky. I think Big Agnes makes pad and bag setups, and I want to say thermarest now makes sleeping bags with pockets for their pads. |
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Vapor Barrier Lining. Not for all conditions of course but adds a ton of warmth and still allows you to turn over inside the bag - the fleece liners always get tangled up on me. It's a bit different sleeping in one but it is warm. |
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The US military Sleep system is based on layering bags. It consists of a summer bag, a spring fall bag and a gortex bivy sack. When used as a single unit with an insolation pad i slept warm in the snow. |
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ldsclimber wrote:The US military Sleep system is based on layering bags. It consists of a summer bag, a spring fall bag and a gortex bivy sack. When used as a single unit with an insolation pad i slept warm in the snow. i now have 5 degree WM and a 40 degree WM that i do the same with and i have never been cold. cheersthe Latter Day Saint Climber sums it up well. Layering works if done right. |
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I spent 4 winters working outside in Utah's high desert and loved my layered system. Rather than spending 100s of $$* on a -20/-30 bag I stacked my summer and fall bag. With a (admittedly crappy) 0* TNF Snowshoe and a MHW Phantom 32 (about 4.5lbs total) I was comfortable down to -10F. With a bivy and sleeping bag liner I was comfortable down to -20F. This was sleeping on a Thermarest Z-Rest. My last winter I started bringing out a Therma-Rest Pro-Lite and using it on top of a cheap, blue foam pad. By far the best combination I have tried and very warm on the snow. I usually slept with my shoes at my side to keep the pads from sliding apart.
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