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Outdoor Research Alpine Ascentshell Bivy - Moosejaw
 
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Outdoor Research Alpine Ascentshell Bivy
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Outdoor Research Alpine Ascentshell Bivy

Outdoor Research Alpine Ascentshell Bivy is rated 3.6 out of 5 by 9.
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3.6 Star Rating
3.6
$299.00
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The Outdoor Research Alpine Ascentshell Bivy is a solo shelter for a single hiker. It's lightweight, it's waterproof and windproof so you remain protected as you sleep. The AscentShell x Pertex tech highly increases the breathability, reducing condensation greatly. Tuck your sleeping bag inside, leave the rest of your gear outside, and slip inside for a good night's sleep. There is plenty of head space to keep the cramped feeling low, and the no-see-um mesh offers extra comfort, without the bugs, on drier nights.

Product Description

Item No.   10560657

The Outdoor Research Alpine Ascentshell Bivy is a solo shelter for a single hiker. It's lightweight, it's waterproof and windproof so you remain protected as you sleep. The AscentShell x Pertex tech highly increases the breathability, reducing condensation greatly. Tuck your sleeping bag inside, leave the rest of your gear outside, and slip inside for a good night's sleep. There is plenty of head space to keep the cramped feeling low, and the no-see-um mesh offers extra comfort, without the bugs, on drier nights.

Eco-friendly Materials
Ultralight
Waterproof Materials and Construction

FEATURES of the Outdoor Research Alpine Ascentshell Bivy

  • Waterproof
  • Breathable
  • Ultralight
  • Fully seam-taped
  • Durable
  • No-see-um mesh
  • Single-pole system
  • Two stake loops
  • One guy line loop
  • High volume toe end
  • Extra head room to store gear
  • Large side opening
  • Fly fastener exposes mesh screen
  • Extra large mesh screen for star-gazing

Fabric Details

  • Bluesign approved, ascentshell X pertex shield air diamond fuse 3L 100% Nylon upper
  • 100% Nylon 40D with TPU lamination floor
  • Bluesign approved, 100% Polyester mesh

Product Specifications

Disclaimer: We only ship this brand to US Addresses.
Type of Waterproofing: Fully Seam-Taped
Sleeping Bag Lining: 100% Polyester Mesh
Features: Waterproof, Ultralight, bluesign Approved
Sleeping Bag Shell: 100% Nylon
Sustainability: bluesign Approved
Waterproof: Yes
Eco Friendly: Yes
Best Use: Camping
Pertex Shield

Pertex Shield
Pertex Shield offers balanced wind and water protection and excellent durability due to a breathable microporous waterproof coating. This provides exceptional comfort and reduced condensation.

Product Reviews

Rated 4 out of 5 by from Nice but tight Good concept, but more space on the lower end would make sense - both practical for using a 25" mat or to store some additional equipment. Humidity is not a major problem, but please could you give a Moisture Vapor Transmission Rate for the bivvy? Thank you!
Date published: 2023-10-19
Rated 3 out of 5 by from Some good features, some needs improvement Used it as a minimalist sleeping system in 50F in semi arid Utah. The asymmetrical headroom and zip system seem to work well, bug screen worked great too. Only complaint is the foot room is tight when used together with my 20" wide x2" thick inflatable sleeping pad and sleeping bag. I'm 5'11" and 200 lbs and there's barely any leg room. Description recommends a sleeping pad no wider than 22" but I think it'll work best with a tapered sleeping bag. Hopefully next version would have a little more legroom then it'll be golden.
Date published: 2023-08-06
Rated 5 out of 5 by from Great material [This review was collected as part of a promotion.] This bivy has the protection you need in the size and weight that you want.
Date published: 2023-08-01
Rated 2 out of 5 by from Probably not keeping it This is not a full review, but an initial reaction to what I consider a really poor design. I got this as a replacement for the previous generation of the Helium bivy that I'd had out on several bikepacking adventures in CA from 8k' at freezing to warm summer redwood forest trips. That model had 5 stake out points and I'd used kam snaps to keep the zip-able head portion of the top rolled up for better air circulation. I didn't get bad condensation if I had the proper temp quilt for the climate. I could fit a rectangular Neo Air All Season pad with a 20º down quilt no problem. So I decided to "upgrade" to the Alpine AscentShell bivy, mostly for the new zip style, but calling this an "alpine" bivy is a bit much. I'm 6' 180lb. and my feet would be wrecked in freezing conditions. I'm a side sleeper and even then, crawling into it with that same Neo Air pad and a 40º down bag, there was a lot compression happening. If I were to sleep on my back, my feet would fully compress the down. It also needs more tie down points, like the current Helium. Not sure if the roll top lop can be used to guy up the mid section of the bivy, but if I keep it, I'll consider adding other points with Tenacious Tape and shock cord. Overall, the headspace feels less claustrophobic than the Helium, but there's not pocket like the Helium had. And I must say, it's way easier to get into and out of than the Helium. If you're going with an UL tapered air pad or a foam pad, you'll be alright, but this is definitely a 2-3 season item for anyone north of 5'10". (I've also had the GoreTex Alpine bivy, so I've got some experience with OR's bivy options) Again, this bivy hasn't seen the outside of my house, so no real world experience, but it will probably stay that way.
Date published: 2022-09-29
Rated 3 out of 5 by from Emergency shelter I have this in my 24 hour pack for search and rescue as an emergency shelter. I have slept a couple of nights in it, in alpine conditions in the summer where it drops to about 7 degrees Celsius at night and both times I woke up with lots of condensation inside. You need to fry your sleeping bag and everything inside and this was with the vent opened completely about 1.5 feet, so tons of ventilation. Not much room for extra gear just your cellphone/radio/water etc. I am not sure if I would buy it again and I don't have anyone I would recommend it too but i am glad I have it as back up as it still beats sleeping under a tarp.
Date published: 2022-09-26
Rated 4 out of 5 by from Great Bivy with issues I'm a Bivy Sack fan. The Alpine bivy has been my favorite, other then the entry so I picked up this one, everything about it is great but I got it for extreme conditions/cold weather and it is very tight with a insulated pads depth, I use a full xtherm mat.I'm 5-10, with a full pad your feet get restricted. Make the sac with about 3 more inches of vertical volume please. Also, when you are Biving at 13000 feet on a ridge edge, the 2 attachment loops are questionable when you are not in the sack, it can catch wind underneath and your Entire shelter system cold pull of the mountain when you step out to take a pee In the middle of the night. A lot of potential or good for a petit person in 3 season conditions.
Date published: 2022-09-22
Rated 5 out of 5 by from Insanely Light My new bivy is even lighter than my original auora bivy. Cant believe OR made an even lighter weight waterproof bivy. Customer service is always a 10 with you guys. I will be recommending to friends. Thanks OR
Date published: 2022-08-01
Rated 2 out of 5 by from Could be designed better Fully understanding that this item is for necessity camping on long hikes as a way to reduce weight and not comfort camping, I still have some issues with it. 1.) Its not tall enough to have an thin air mattress in. A closed cell matt is all I would recommend. When sleeping on your side, as I often do, your shoulders touch the mosquito netting and they bite right through it. 2.) It only has 2 anchor points and needs 4. One tent peg at the head and one at the foot. If they come loose/free from tossing and turning the entire tent looses its shape and you have to get out of the sack and re-spike it. i bought this for the JMT and there will be rocky spots with not enough dirt to hold a peg and I am hoping that a pile of rocks will be enough to hold its shape. 3.) It does not come with line/string to anchor the pegs, or pegs themselves. East fix to buy them separately but for the $$$ you think they would include them. 4.) There is no pouch or pocket inside to hold your glasses, phone, head lamp, etc. This forces you to let them float in the tent and I crushed my glasses as a result. Seems like this wouldn't add much weight to sew a pocket in.
Date published: 2022-07-20
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