I supposed to finish the entire vacation with out a night indoors, or not less than think that I was capable of doing this. (because it occurred, I expended a person night within, about 5 times to the trip, with one of my beloved trail stewards, Ken Oelkers of Silver Bay.) following the excursion I produced several compact changes to my Wintertime outfits and snooze technique, but frequently these methods have been place-on—they resulted in a tremendous improvement about my Sea-to-Sea encounter.
Andrej Badin on March 10, 2024 at 1:00 am pricey Andrew, thank you for a nice article along with a lively dialogue! Could you Potentially elaborate a tad far more on the use of VBL’s in relation to Total hygiene while staying on target for months and lengthier devoid of a chance to wash/dry garments inside a heated shelter/developing? does one wash your sweat soaked baselayer utilizing cleaning soap, wring it, set it back on and continue hiking, drying the garment using your overall body warmth?
end-and-go actions like climbing and backcountry alpine skiing are challenging for VBL use because your heat output is a lot more erratic.
That’s since the physiology is considerably less suitable when compared to the physics listed here. Air features a constrained capability to comprise gaseous drinking water. Put simply, the concept of the greatest humidity is real and at this sort of a degree, it is thermodynamically unfavorable for drinking water to depart the floor of the droplet to behave to be a gasoline. And energetically unfavorable functions do not, by themselves, occur In this particular universe.
would it not definitely, Given that the dew stage could be someplace within the sleeping bag’s insulation? I'd surmise the vapor would ‘want’ to vacation ideal throughout the clothes system and outward along the temperature and humidity gradients to some (dew)point observed deep in the sleeping bag. sadly for Mr. Vapor even so, the outward bound h2o vapor would speed correct in to your proverbial brick website wall when it arrived at the sleeping bag’s water-resistant inner shell. Possibly then a VBL-accommodate would not be essential in the least–just an outer shell to the puffy that was breathable yet markedly ‘watertight’, e.
remember to let me know if any of this seems incoherent or naive. thanks in advance for your time and energy and a focus!
underneath that, issues get pretty awkward (largely due to the fact I’m nevertheless determining my facemaks setup).
If a sleeping bag doesn’t breath properly plenty of then I suppose it could start out receiving weighty with moisture. But my expertise in Alaska in the winter was the air was really dry as well as down seemed to work properly. Perhaps I wasn’t out very long ample to note the accumulation of H2O during the bag.
many thanks a lot of for this truly specific and useful short article. I’m heading to Lapland then Svalbard in 10 days, and hoping to get ready for your circumstances.
Don Nevin on August eighteen, 2015 at 6:11 pm My encounters tenting, Dec.-Jan., in the White Mountains, in excess of twenty five a long time ago, verify your present suggestions. Experimenting about a number of several years with external sacks and interior liners led to finally sewing a pair of two-piece ‘pajamas’ created from reflective, VB materials bought from Stephenson’s. Can’t don't forget what my evening time, light foundation layer was (in all probability cotton), but I wore wool socks inside of my felt boot liners and, carrying my PJ’s, with beneath zero temps outside, was toasty warm in my 10-degree Hollofil II sleeping bag; a little bit clammy, but heat!
Andrew, do the thing is yourself perhaps doing some matters in a different way on reflection on some visits and in a few conditions had you increased employed hydrophobic down inside of a sleep technique? If this was addressed someplace now I apologize as I could possibly have missed it as I didn’t browse every single word below.
For sleeping when you are not building heat that means the moisture stage should reach a point out of stasis as opposed to continuing to receive wetter. Furthermore, it usually means considerably less humidity reduction, however you continue to drop a lot as a result of respiration.
Re multi-day use. Your VBL prime and base should have vents (e.g. front zip, forearm zip, facet hem zip) so that you could air out effortlessly and immediately; VBL’s without the need of such vents undoubtedly are a catastrophe ready to occur. Also, much on the moisture accumulates on the inside layer from the VBL, so when it’s chilly more than enough you are able to immediately just take off the VBL, let the moisture freeze, and then shake off the frozen humidity.
getting inside the business I visualize the notion, Breath-potential for convenience and resistance for heat* It is all about that equilibrium. you can find new materials out now that give down a operate for it’s dollars and mitigate dampness problems far better.