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| qwerty19. 11. 2014 15:35:00 |
Hello,
I'm interested if anyone has experiences with bivy bags, especially how it is with condensation.
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| qwerty20. 11. 2014 10:50:51 |
What's the difference between more expensive and cheaper bags.
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| viharnik20. 11. 2014 17:26:56 |
What Vaude offers with bivy bag is more than enough for any mountaineer here. Membrane is what makes clothes, shoes, and bivy bag more expensive, not necessarily best choice for every condition.
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| qwerty23. 11. 2014 11:21:00 |
Aha, thanks for the answer.
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| viharnik23. 11. 2014 11:42:18 |
In Annapurna you can get Pieps bivy bag too, which is very functional.
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| peter4623. 11. 2014 18:07:38 |
membrane is key if you don't want to wake up in a stream! check this - KLIK with postage cheaper than non-membrane here. top product always among highest rated! without membrane bivy doesn't breathe you do so moisture condenses and wets you. bivy without membrane only for shelter outside without membrane no point
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| viharnik23. 11. 2014 18:59:38 |
Peter, who teaches such wrong faith that non-membrane bivy bag is unusable outside? Quite the opposite, bivy bag breathes best if not membrane (just breathable polyamide), because membrane only makes the bag a bit more waterproof against prolonged rain, with normal humidity outside non-membrane breathes much better and during sleep no condensation from breathing or minimal compared to membrane. Every even smallest moisture turns into cold in winter, which we feel one way or another. Vaude has Celtex impregnation inside and taped seams, like a tent. Important gear parts like bivy bags must be trusted to recognized mountaineering brands, even if a bit more expensive, but for a reason.
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| peter4623. 11. 2014 20:11:45 |
look I have experience with both and won't philosophize - I won't buy bivy bags without membrane anymore! and Alpkit is a recognized multiple award-winning company (which you obviously don't know) and for some years definitely best buy in the field of bivy bags and down jackets (and more). for me boutique production with tradition from people who hike climb etc. themselves matters more - not from some multinationals that just cash in. no hard feelings your Vaude is ok too but not god and stick
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| viharnik24. 11. 2014 07:09:52 |
Alpkit company no one knows, because even in its mere 20-year development it hasn't convinced buyers with quality. Such companies there are oceans in the world and not much is known about them. They can't even construct one sleeping bag, which requires years of experience: baffles, number and shape thereof regarding thermal properties of human body parts, knowledge of down filling, seams, hydrophobic treated down, material quality, weight, shape for volume and comfort, zips, reinforcements in foot area, seams... Membranes are known to breathe much less than non-membrane and are used only by ice climbers and Himalayan climbers. A person who knows Gore-Tex and the rest well told me honestly that Gore-Tex in 25 years of existence only made good business, because products since then have enormously increased in price by 100% and more. In them during activity one just sweats and cools, when heavy rain, everything is wet anyway. After 5 years of membrane use, you can take the expensive product only to bulk waste.
Here, Rab makes bivy bags from eVent material, which breathes approx 7x better than Gore-Tex, that is past.
http://rab.uk.com/products/equipment/shelter/bivis/sierra-bivi.html
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| 75'er5. 11. 2015 21:20:17 |
Well the topic is already a year old, but probably still interests someone bivy bags.
I also noticed Alpkit's Hunka in some tests and it's quite well rated. Here we don't have much choice of bivy bags. Since I'm a bit taller, the choice is even more limited. Does anyone have experiences with Salewa PTX Bivibag?
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| anzecokl6. 11. 2015 09:49:25 |
If you have a good sleeping bag, you almost don't need a bivy bag, except maybe in the rain. Since all membranes regardless of manufacturer work on the same principle, the trick is that if it's raining or snowing outside, the moisture created inside by your "breathing" body, there is no membrane in the world that would still send "vapor" out. And you'll be wet inside, less than from rain or snow, but still. So except for really the worst cases or bad weather you'll sleep much better in a quality sleeping bag WITHOUT bivy bag. Because none breathes as well as the sleeping bag itself. Modern sleeping bags also stay dry without problems from some snow blowing or really good ones even dripping...
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| SamoK6. 11. 2015 10:36:30 |
A bivy bag really gets its true meaning in two cases: in rain or as an "emergency" sleeping bag. In both cases it is of invaluable value. It must be membrane, of course. Even in rain the difference is noticeable.
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| sinek33316. 12. 2016 14:59:49 |
Any new experiences? Which and what kind of bivy bag to buy..
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| lojz22. 09. 2021 16:41:10 |
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| SamoK22. 09. 2021 17:24:25 |
My experiences are that bivy bag (which must breathe well of course!) is useful in precipitation or as additional thermal insulation with light sleeping bag (or without). Otherwise superfluous. No bivy bag breathes 100%, so at high humidity even more moisture accumulates inside than without it.
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