Giddy_up wrote:I might be mistaken but doesn't the Sol cover the sleeping bag. VB goes inside the bag between the bag and you!
Moondog55 wrote:Giddy_up wrote:I might be mistaken but doesn't the Sol cover the sleeping bag. VB goes inside the bag between the bag and you!
Actually it doesn't seem to matter how big a VB is cut, you save a few grams if it's cut smaller but then it isn't able to be used as an emergency SB cover
An effective VBL system needs to consist of either a sleeping bag liner or a full multi-piece VBL clothing suit. It is redundant and unnecessary to use both a VBL liner and a VBL suit. Personally, I prefer to wear VBL clothing, which has a few advantages. First, I can use a lighter sleeping bag because I can sleep with all of my clothes on—a base layer between my skin and VBL, then all of my other layers outside the VBL. With a VBL liner I can only sleep in my base layer garments; otherwise all of my layers would get wet. Second, I already have all of my clothes on in the morning when I wake up, which saves time and body warmth. Even if I brought all of my non-base layer clothes into my sleeping bag but outside of a VBL liner, I will lose a lot of heat when I try to change into them. And third, I keep all of my clothing dry at night and during the day, except for my base layers, which may become slightly moist with perspiration. If I were to rely exclusively on a VBL bag liner, perspiration would enter and become trapped in my insulated jacket and pants while I wear them during rest stops or in camp. The one downfall with VBL clothing is that I need to have a complete VBL suit, which is heavier and more complex than a bag liner. In the long term, my sleeping bag could be compromised if I am not completely covered with VBL’s. A complete suit would include socks, pants, jacket, gloves, and a hat or balaclava.
Orion wrote:I've never been in conditions that warranted using a VBL but the idea is fascinating. Having never tried it I've wondered about answering a call of nature in the middle of the night -- you'd be dressed in wet base layers, not the ideal starting point for a trip outside in the cold. And in the morning you'd start out the day wet. Or maybe you don't get as wet as I imagine.
Giddy_up wrote:I sleep in a wool base layer MD with no detrimental effects.
Can you enlighten me on the synthetic use reason?
nq111 wrote:Orion wrote:I've never been in conditions that warranted using a VBL...
What conditions 'warrant' a VPL is a matter of individual opinion and experience. I think VPL for sleeping is perfect for the almost freezing, constantly damp conditions of Tassie (helps heaps keeping the sleeping bag dry and puffy) but others may disagree.
slparker wrote:I find the discussion on VB clothes for active use somewhat curious. This is only used for extremely cold conditions, from what I have read - and even then Andrew Skurka, for example, emphasises hte need to tailor exertion so as to not sweat too much. Can you imagine what it would be like wearing a VB suit in Australia whilst walking/skiing in anything but a blizzard? I would be comatose with dehydration within the hour. makes perfect sense for static activities, however.
The idea of a VB quilt or bag seems to make perfect sense though. rather than have a VB 'suit' to sleep in, or a VB bag and VB bag cover, what about a sleeping bag/quilt with silnylon instead of standard nylon as the outer?
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