I’m imagining things like a down puffy with a DCF or silnylon inside, etc. Seems like This may get the job done well so long as the outer fabric was air permeable to allow lofting and compression.
* The breathability with the bivy fabric is proscribed even beneath the top situations. And In this instance it had been totally negated by the substantial ambient humidity — since it was pretty humid exterior the bivy, there was no exactly where for the humidity Within the bivy (from perspiration) to go, so it stayed trapped in.
I’m not worried about the lack of “waterproofness” — my shelter serves this operate really properly, and WP/B fabrics aren’t that water-resistant in any case.
” I used significant examining scholarly content articles on the subject And that more info i in no way uncovered anyone who even instructed that our overall body regulates insensible sweat (or any sweat) based upon the humidity outside the house the body. This discipline is intensely analyzed by anesthesiologists. I had been incredibly delighted Andrew didn’t say that was the situation.
If such a system exists, then VBL would conserve drinking water and electrolytes, as well as system warmth. clearly from Everything you report, less than heavy workload this putative suggestions mechanism isn't more than enough on its own to control perspiring adequately. Most likely, although, this type of mechanism could make a significant variation all through low exertion moments including sleeping.
not too long ago, I ordered a sleeping bag VBL produced by Western Mountaineering and find it irresistible! I have tested it out in a very 32 diploma WM Summerlite bag in -9 diploma climate… Here is the connection to my videos in case you care to Have a look.
This can be all really fascinating even though, I recognize that I'll try to master adequately about VBL so I am able to place it to test as soon as possible….
of the warmth and wind security of the shell, but not all of it. If the VBL layers do not have superior venting, you’ll despise them for the duration of these periods.
My sleep program weighs in at under 3 lbs and I've slept less than the stars in under zero weather conditions without any challenges. All due to a VBL!!!
Re designs, contemplate trying to replicate the dimensions of your favorite shell/raingear trousers and bottoms.
Layering. VBL’s are typically worn specifically versus the pores and skin or using a base layer amongst the VBL as well as pores and skin. Individually, I want the latter solution, which I think has some critical Gains. First, the base layer results in a little buffer that minimizes distress (i.e. “clamminess”) but without decreasing sensitivity to perspiration, which I would like so as to make informed thermoregulation decisions. Second, by carrying a foundation layer I secure my pores and skin from immediate connection with the frigid air, which would take place if not if I necessary to ventilate my “next to pores and skin” garment by unzipping it.
It was not simply which i designed it to 6F Okay, but The reality that I had been extremely heat and dry! No condensation! (except to the frost bib as planned). There was no other condensation inside the sock. No fat added to any in the insulation from humidity. I had been so warm I understand I could have gone An additional 5 or 10 degrees Or perhaps far more. quite a bit of oldsters complain of cold toes- as well as cold butt and back- in a very hammock, even when temps are only from the 20s or 30s. But my feet were being around heating. I felt like they were being sweating. I thought of taking away either the booties or wool socks, but in the end I just Permit it go. each morning, all insulation and material Within the “sock” was bone dry, and Once i removed my VB socks, my ft weren't as moist as I was anticipating them being, and dried quickly from evaporation. My preceding report lows in the hammock, working with both Pea Pods or down UQs, were about 10F. But, nevertheless I was heat enough, I used to be in no way this heat, Regardless that I wore Significantly thicker layers.
Not A great deal luck at Individuals temps and humidity. I was soaked. Baselayer, second wool layer, puffy vest, after which you can a breathable jacket. I sense like I could well be much better off containing the sweat. possibly a lightweight baselayer, accompanied by a complete vapor barrier for upper and reduced body. I’d be greater of containing the sweat in lieu of staying soaked and freezing. I had a fresh new baselayer at the 40 mile checkpoint, but didn’t dare keep on. Do they come up with a vapor barrier to the torso and legs that would function for me? Do you might have any recommendations not merely on exactly where to obtain a set, but in addition if you think it’s a good idea. many thanks so much in advance for any support you could potentially give.
I’ve also read that VBL socks can help to stop boots acquiring damp as a consequence of perspiration and will be Primarily beneficial with leather-based boots, which retain dampness extended than synthetic. Is that this true?