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A 9 oz emergency bivy sack that could save your life. The MSR E-Bivy is an ultra-compact and lightweight bivy that offers versatile protection in any season. It is factory compressed to the size of a soda can so you can easily carry it along as an emergency shelter—even on day trips. It’s also provides complementary, ultralight protection for your sleeping bag under a tarp, or a boost in warmth when pushing your bag’s temperature rating between seasons. A durable, coated floor and silnylon top fend off dew, frost, light precipitation and, once deployed, the stuff sack expands for easy packing.
Offering versatile protection all seasons of the year, the MSR E-Bivy is an ultra-light, super compact emergency bivy sack that can act as a primary shelter, emergency use or inside a tent for additional warmth. Built with a tape SilNylon top and 100% waterproof floor, this full-coverage, ultra-compact emergency shelter comes factory compressed and takes up no more room that a can of your favorite beverage and weighs in at just 9oz.
Whether used as a planned or emergency shelter, the E-Bivy will provide the shelter you seek and functions brilliantly as a Fast & Light Bivy for minimalists whose #1 concern is weight.
The ultra-compact and lightweight E-bivy sack from MSR offers versatile protection in any season. Use it for outdoor emergencies, planned fast and light trips, or inside a tent to add warmth.
As much as you'd like to, you never can plan accordingly with the weather, so pack along the E-Bivy from MSR for extra protection when you're sleeping. This handy bivy sack, made of taped and coated nylon, compresses down to the size of a soda can, and weighs just over half a pound.
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.
| Average weight: | 10 ounces |
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| Average weight - metric: | 0.28 kilograms |
| Capacity: | 1 person |
| Clip / Sleeve: | N / A |
| Design type: | Bivy |
| Dimensions: | 82 (length) x 33 (shoulder) x 24 (foot) inches |
| Dimensions - metric: | 208 x 84 centimeters |
| Doors: | 1 |
| Fabric: | 30D x 246T ripstop nylon 66 silicone coated |
| Floor Fabric: | 40D x 238T ripstop nylon 6 10000mm polyurethane & DWR coated |
| Floor material: | ripstop nylon coated with 10,000 mm polyurethane and DWR |
| Freestanding: | N / A |
| Manufacturer Warranty: | Lifetime |
| Material: | silicone-coated ripstop nylon |
| Packed Size: | About the same as a soda can |
| Packed Weight: | 10oz (280 g) [minimum weight] 9 oz (250 g) |
| Pole Material: | N / A |
| Poles: | None |
| Recommended Use: | Ultralight solo campping |
| Season: | 4-season |
| Vestibule Space: | N / A |
| Warranty: | Lifetime |
| Weight: | 7oz (200g) |
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View other products from MSR classified in Hiking & Camping > Shelters & Tents. View all products from MSR.
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 | MSR E-Bivy Sack | $79.93 - $79.95 |
This product is available in the following colors:
Click any color to show the product in that color
 | Maize |
Use this chart to find which retailer offers this product in the size, color or other options that you desire. Click on the price to purchase.
| Size | Color | |
|---|---|---|
| Maize | N/A | |
| Yellow | 79.90 | |
| N/A | 79.95 | |
Mountain Gear offers this product at $79.95, but does not provide any color/size information.
Backcountry.com offers this product at $79.95, but does not provide any color/size information.
Altrec offers this product at $79.95, but does not provide any color/size information.
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Spectacular Ultralight Backpacking Option | |
| Rating: |  |
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. | |
| mountainman99 at Backcountry.com on 07/10/2009 | |
Great back-up | |
| Rating: |  |
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. | |
| mhonigfort873441 at Backcountry.com on 06/11/2009 | |
Perfect | |
| Rating: | |
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. | |
| cody lindley at Backcountry.com on 05/05/2009 | |
Just a heads up! | |
| Rating: | |
I just checked this bivy weight on the MSR website, it is 9oz (minimum) and 10oz packed. Not 7oz. | |
| Josan at Backcountry.com on 08/17/2009 | |
Not Breathable | |
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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. | |
| djmcclinto1327304 at Backcountry.com on 06/15/2009 | |
inside condensation problem in humid weather | |
| Rating: |  |
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. | |
| jerboy2468794314 at Backcountry.com on 09/07/2009 | |
Good Backup | |
| Rating: | |
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. | |
| Cory Guru at Backcountry.com on 05/09/2009 | |
