Thank you for this article. I did want to indicate one particular problem with all your dialogue of dew issue and condensation. Dew level can be a function of two variables: the particular temperature, as well as relative humidity. Unless RH is 100%, the dew place will always be lessen than the actual temperature.

during the day, apart from my base layers, which may become somewhat moist with perspiration. If I were click here to count solely with a VBL bag liner, perspiration would enter and come to be trapped in my insulated jacket and trousers though I put on them through relaxation stops or in camp.

Maybe your Energetic layer could possibly be sized up (contemplating like a baggy nano air jacket and trousers) that you may toss around your puffy also when stopped.

nonetheless there remain a few things which confuse me, and I hope you gained’t brain if I inquire a couple of queries…

as the temperature across your sleeping program will not be constant, but rather a gradient, the dew level will Furthermore certainly be a gradient, and if condensation will occur within your bag will count both on that gradient and on the quantity of humidity coming into the method (i.e. exactly how much you might be perspiring), as well as the porosity from the outer sleeping bag material.

With a VBL, on the other hand, this situation is much more unlikely to happen: you might see the rainforest-like humidity amount inside the microclimate—or, if you truly overdo it, the sweat dripping down your again—and you'll respond by getting rid of layers or growing air flow.

In such a scenario, humidity produced by the body wouldn't enter the insulation (in the morning, the amassed interior dampness could possibly be wiped dry by a light-weight towel to then be frozen accompanied by a defrosting-by-shaking). humidity from any source beyond the bag’s exterior shell couldn't enter insulation.

After the achievement of a VBL in my sleeping bag final calendar year, and plastic bags on my ft I’m getting the RBH VBL jacket and socks out to Perform this winter :). My only issue is damp toes 24 hrs daily for your for a longer time legs (1-3 weeks).

Sure, VBL’s would assist your trigger. They’re difficult to find, but I envision that you may at the least look for a major that would functionality nicely on a bicycle; bottoms could be harder, mainly because the vast majority of trousers are going to be designed for a standing-up position, not leaning around on a bicycle.

Re patterns, take into consideration seeking to copy the dimensions of your preferred shell/raingear pants and bottoms.

Socks are tougher considering that they might’t have vents and since you can’t take them on and off conveniently. For me a minimum of, it labored great to remove them at the conclusion of the working day when I arrived at camp. My liner sock usually might be damp, but it will dry out right away. Sure, I’m mindful that moisture likely wound up in my sleeping bag, but Total it was a minuscule sum, especially considering that I could ordinarily dry them out some right before going to mattress.

Thanks for the wonderful article. I've employed bread baggage on my toes For some time now but every so typically I'm plagued by having an annoyance which makes me steer away from planning to a more high falootin’ method for my feet. as being a geezer, nearing 70, my hands and ft are sometimes chilly even though snowshoeing listed here in Northern Ontario and Quebec. there is not any concern over it, utilizing a vapour barrier is excellent and keeps the ft heat and insulation dry.

Not A great deal luck at All those temps and humidity. I was soaked. Baselayer, 2nd wool layer, puffy vest, and afterwards a breathable jacket. I really feel like I will be better off that contains the sweat. possibly a lightweight baselayer, followed by an entire vapor barrier for upper and lessen overall body. I’d be better of that contains the sweat as an alternative to currently being soaked and freezing. I'd a clean baselayer at the 40 mile checkpoint, but didn’t dare continue. Do they make a vapor barrier with the torso and legs that will do the job for me? Do you've got any suggestions not just on the place to get a set, and also if you think that it’s a good idea. many thanks a great deal of beforehand for any help you may give.

I’ve also heard that VBL socks might help to prevent boots getting moist because of perspiration and might be Specifically handy with leather boots, which keep humidity extended than artificial. Is that this legitimate?