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Camping & Hiking | Home » » Outdoor Research Advanced Bivy (Mojo Blue) | | | | | | Colors: | | | | | Description: | | The spacious Advanced Bivy can be used in place of a single tent. It is larger than the Alpine Bivy, with more space for thicker sleeping pads and loftier bags. The patented dual-pole system can be used for increased ventilation and interior space, or left behind when weight and pack space are critical. The GORE-TEX® Respiration PositiveTM fabric allows warm moist air to escape to avoid condensation while providing supreme weather protection. A zippered vent at the base improves airflow on humid nights. Specs: length 87 in.; peak height 20 in.; width at shoulders 26 in.; packed size 15¼ x 4 x 4 in. | | | Features: | |
• Durable Hydroseal coated waterproof nylon floor
• Two shock-corded Delrin poles, overhead and circumferential
• Removable no-see-um netting covers opening
• Five stake loops, three guy line loops
• Avg. weight: 34.0 oz. w/o poles; 39.0 oz w/ poles
| | | Product Details: | | | Average Customer Rating:
|  based on 1 reviews |
| | | | Customer Reviews: | |
Average Customer Review:
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Most Helpful Customer Reviews
2 of 2 found the following review helpful:
The 5-star hotel of bivy sacksJan 14, 2012
By Christopher Culver
As an avid hitchhiker who needs a shelter that is quick to set up and then pack in the morning, I decided a bivy sack would be the best option. But after going through two cheap nylon bivy sacks that didn't breath and had me waking up soaked with condensation, it was obvious that an investment in a quality Gore-Tex bivy was necessary. I bought the Outdoor Research Advanced Bivy and now, having used it for six months in a variety of places, from hot sandy desert to snowy forests, I think I have a pretty complete view of its pluses and minuses.
The OR Advanced Bivy has a nylon exterior with a Gore-Tex Respiration Positive coating on the inside. When I first received the bivy, I was a bit worried that there was no label with the "Guaranteed to Keep You Dry" claim that comes with Gore-Tex clothing. However, after being rained on a number of times in this bivy, I've found that the bag does keep moisture out quite well. Note that it is important to keep the foot of the bag convex (e.g. stuff it with some clothes), since the bag may eventually leak through if there's a depression there and a puddle forms. Otherwise, water runs smoothly off the bag (it's so reassuring to lie in the bag and see the silhouettes of raindrops flowing down the sides).
Condensation from one's breath or sweat is not an issue with the OR Advanced Bivy. Except for a few centimetres of taped seams at the top where moisture may form, the Gore-Tex Respiration Positive coating works admirably. For especially humid environments, there's a mesh screen at the foot of the bag that can be opened with a zipper for further ventilation, but I've rarely used that and I've still encountered no appreciable moisture buildup inside the bag.
Avoiding moisture is *the* key feature of a bivy sack, and this one excels. But there's other attractive features of the OR Advanced Bivy. The fabric is quite durable. Initially I was sceptical that the bag would hold up through rugged outdoor use and multiple trips through a washing machine, but it is still like new. There are straps inside the bag to secure a sleeping pad -- it's remarkable how much warmer one stays when a thermal pad is inside the bag and not outside. There's a pocket inside to hold items like a mobile phone or glasses. At the head of the bag, there's a mosquito net that allows you to look out or up at the stars without the problem of insects coming in.
The bivy comes when four poles to keep elements off your face when the mosquito net or bag is zipped up. The Advanced Bivy weighs only a few hundred grams, but if you know you are going to a place without precipitation or mosquitoes -- and therefore don't need to fully close the bag -- you can leave the poles at home for an even lighter shelter.
This is a somewhat pricey item, but anyone looking at bivy sacks should choose it right from the start. Don't go through the unpleasantness of a cheaper, nylon sleeping bag first, when the OR Advanced Bivy is a good investment in longterm Gore-Tex comfort.
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