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MSR E-Bivy
The MSR E-Bivy weighs seven ounces and packs to the size of a soda can. Do you really need to know more? OK, fine. MSR made this ultralight bivy with SilNylon and fully taped seams to keep you dry when weather cuts loose on your trip. A short overlap shelters your zipper from moisture, so you don’t get soaked during the night.
Bottom Line: No, the weight is not a typo.
Talk shop with all the gear freaks out there: ask 'em questions, upload/browse photos, and give your 2¢.
Just a heads up!
By: Josan
August 17, 2009
I just checked this bivy weight on the MSR website, it is 9oz (minimum) and 10oz packed. Not 7oz.
(http://cascadedesigns.com/msr/tents/fast-and-light-tents/e-
How tall is this Bivy? Will it fit a tall person in an extra
How tall is this Bivy? Will it fit a tall person in an extra long bag?
By: freckleban1175619
August 20, 2009
At 208 cm long and 84 cm wide, It will fit most people.
By: DakkaGuru
August 20, 2009
inside condensation problem in humid weather
By: jerboy2468794314
September 7, 2009
I used the E-bivy last night under a large silnylon tarp and over a summerweight down sleeping bag. The weather was rain showers, very humid (90% humidity), breezy and 54 degrees F.
Although the top looks thin and very breathable, I awoke to a disturbing amount of insensible perspiration moisture on the inside of the E-bivy's top. I suppose the air was so humid, my body's moisture was condensing on the inside of the sack and could not pass out. The outside of the down bag was wet in large spots. But, I had this problem on and off with another bivy bag.
I'll use the E-bivy again. Hopefully, condensation will not be a problem in drier weather. I hope I don't have to return it. There's no point in owning a bivy sack that holds in your body's insensible perspiration. The tarp kept off all the rain so I didn't get to see how resistant the E-bivy is to rain or mist.
How do you breathe? Is there something that keeps the head flap
How do you breathe? Is there something that keeps the head flap off of your face?
By: mountainman99
April 14, 2009
This is a super simple bivy sac. It's really made for emergencies (thus the 'E' in E-Bivy stands for emergency). The outer material is super water resistant and breathable. The seams are not sealed so you might experience some leakage there if you're in a substantial rainstorm or downpour. There is a small zipper on the side for ease of entry and a flap of material that allows for more ventilation. It's a great bivy for the price and packs incredibly small.
By: Jason Livingston
April 14, 2009
Spectacular Ultralight Backpacking Option
By: mountainman99
July 10, 2009
I just did a 2 day backpack in the Wallowas and used the MSR E-Bivy. I'm really jazzed about it. I recommend it for ultralight backpacking. My pack was so light after replacing my tent with this. For the price you could buy one for a friend. It adds some warmth - I was a little warm in my 40 degree sleeping bag on a 35 degree night. The sky threatened for rain so I kept the head flap over my face all night. I was able to breathe fine but my breath produced a fair amount of condensation on the sack around my face. I should have kept the flap under my head until it actually sleeted. I intend to use this on all my backpacking trips.
What about using it under a poncho tarp for a weekend trip?
What about using it under a poncho tarp for a weekend trip?
By: ste2952681
April 1, 2009
!! This bivy is not waterproof !! The floor material is a waterproof, polyurethane coated nylon, but the top is only highly water-resistant sil-nylon. You and your sleeping bag will probably be waterlogged if you decide to use this as your primary shelter in a steady downpour. MSR describes it as able to "fend off dew, frost, light precipitation" as an emergency bivy -- "e-bivy".
By: Niall MacRae
May 14, 2009
Well this bivy is already waterproof, so go ahead if you want but it's not really necessary. All you're doing is adding weight and taking up space.
By: Angus Bohanon
April 1, 2009
Perfect
By: cody lindley
May 5, 2009
This was exactly what I was looking for. A square (more square than most) ultra-light weight bivy sack that I can place a sleeping pad in along with a half sleeping bag (alpine style bag used with down jacket) for use with a tarp tent setup in the snow.
I assume there is no mesh or netting in the face area?
I assume there is no mesh or netting in the face area?
By: ThayerZ
February 22, 2009
You are correct, no mesh. This bivy is meant to be used as an emergency bivy just in case things get bad. It is an excellent product that has a super durable floor (10,000mm coated 40D) and a highly water-resistant, breathable top. It's easy to get in and out due to the zipper-side access. It actually is a decent shelter if all you want is something to keep the occasional drops of moisture off of you while sleeping. For instance, in areas like the Grand Canyon where rain (at certain times of the year) is not that prevalent, this would be a great shelter option. It is also intended for times when you are caught in weather and need an emergecy shelter that's super fast to deploy. It isn't meant as a primary shelter for areas where a significant amount of rain is expected.
By: Jason Livingston
February 22, 2009
Not Breathable
By: djmcclinto1327304
June 15, 2009
This bivy would get a 5 if the top material were something, anything that is breathable. The dimensions, quality, and overall design of this bivy are great. However, the entire bivy is made of sil-nylon, which is fine for the floor, but not the whole thing. Used it on a weekend and my bag was totally soaked inside the bivy each morning. I guess the same guy that designed the HyperFlow designed this? I thought I would give it a try anyway, but had to send it back. If they would change the top material it would be a winner.
The floor is coated and fully waterproof to keep you dry even on wet ground. It uses a "40D x 238T ripstop nylon 6 10000mm polyurethane & DWR coated."
By: Jeff Gerhard
July 9, 2009
Great back-up
By: mhonigfort873441
June 11, 2009
Light weight simple bivy. I took this on a desert trip as a back-up instead of a tent/tarp and was very pleased. I would not want to depend upon it in a prolonged downpour but it would be perfect for a desert shower. I used it a ground cloth and was very happy not to be carrying the extra weight of a tent.
What is the size on this one?
What is the size on this one?
By: Jo Krogstad Valseth
February 2, 2009
Pretty small. It actually is packaged in something resembling a small can of soup, but is impossible to get back in the bag (some, with about an hour's worth of effort have been able to, but it's not worth it man). However, there is a slightly larger bag included made for repackaging. The bivy itself is large enough to fit the fattest bags and is very water-resistant, but its really made for emergencies if your caught out with no shelter. It's not intended to be your only or main shelter however.The floor is also waterproof
By: Matthew Niedermiller
February 2, 2009
Good Backup
By: Cory Guru
May 9, 2009
The E-bivy certainly has its place and is a great Emergency option, but I would not use this as a day to day shelter. Obviously light-weight and minimalistic, machine packed into a very small stuff sack; Once removed, don't expect to get it back into this compact sack, their is a slightly larger stuff sack included for re-packing.
Change me.
Tech Specs:
- Material:
- SilNylon
- Freestanding:
- N / A
- Poles:
- None
- Pole Material:
- N / A
- Doors:
- 1
- Clip / Sleeve:
- N / A
- Vestibule Space:
- N / A
- Packed Size:
- About the same as a soda can
- Weight:
- 7oz (200g)
- Recommended Use:
- Ultralight solo campping
- Manufacturer Warranty:
- Lifetime
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