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      Sierra Designs Mobile Mummy 800 2-Season Sleeping Bag Video

      The Sierra Designs Mobile Mummy 800 2-Season Sleeping Bag is designed to move with you so you can sleep on your side, stomach or back. And, you can wear it like a jacket to read, cook and walk around.

      Sierra Designs Mobile Mummy 800 3-Season Sleeping Bag

      The Sierra Designs Mobile Mummy 800 3-Season Sleeping Bag is designed to move with you so you can sleep in any position you like. And, you can wear it like a jacket to read, cook and walk around.
      • $469.95 $499.95

      Item # 865360

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      • With a European Norm (EN) lower-limit rating of 16°F, the Mobile Mummy 800 3-Season Sleeping Bag is suitable for spring, summer and fall backpacking
      • Jacket hood moves with you when your roll around and turn your head; there are no cords or toggles to bug you
      • Zipperless arm ports are ready for instant use—simply stick your arms out to grab a book or hold a mug of hot chocolate
      • 58 in. long zipper runs down the center of the top of the bag and allows easy entry and exit; 2-way zipper lets you zip open the bottom for venting
      • Unzip the bottom, stick your feet out and go for a walk while wearing the sleeping bag; tuck the footbox up with toggles to prevent bag from dragging on the ground
      • Hood, zipper and arm ports all have reinforced draft tubes to prevent cold air from sneaking in
      • When you're sitting upright in the sleeping bag, the shoulder design fits comfortably like a jacket
      • Down is considered the best insulation available, but when wet it quickly loses loft and the ability to keep you warm; 800-fill-power DriDown is treated to resist moisture
      • Proprietary process treats each individual duck down plume with a molecular-level polymer so the down stays dry longer, lofts better and dries faster than untreated down
      • DriDown insulation stays dry 10 times longer, retains 170% more loft when exposed to moisture and dries 33% faster than untreated down
      • Ripstop polyester exterior endures repeated use in the outdoors; polyester taffeta lining is soft and comfortable next to skin
      • Sierra Designs Mobile Mummy 800 3-Season Sleeping Bag comes with a stuff sack and storage sack
      • European Norm (EN) is an independent third-party temperature rating, allowing accurate comparisons across brands with other EN-rated bags


      Sierra Designs Mobile Mummy 800 3-Season Sleeping Bag

      Specification Long Regular
      Best use Backpacking Backpacking
      EN lower limit (rating for men) 16 degrees Fahrenheit 16 degrees Fahrenheit
      EN comfort (rating for women) 27 degrees Fahrenheit 27 degrees Fahrenheit
      Temperature rating (F) 27 degrees Fahrenheit 27 degrees Fahrenheit
      Temperature rating (C) -3 degrees Celsius -3 degrees Celsius
      Weight 2 lb. 8 oz. 2 lb. 5 oz.
      Shell Ripstop nylon Ripstop nylon
      Insulation type Down Down
      Water-resistant down Yes Yes
      Fill 800-fill duck DriDown 800-fill duck DriDown
      Fill weight 20.8 ounces 18.5 ounces
      Lining Nylon taffeta Nylon taffeta
      Sleeping bag shape Mummy Mummy
      Fits up to (in.) 78 inches 72 inches
      Shoulder girth (in.) 68 inches 64 inches
      Hip girth (in.) 60 inches 58 inches
      Stuff sack size 8 x 15 inches 8 x 15 inches
      Stuff sack volume 12.4 liters 12.4 liters
      Compressed volume Unavailable Unavailable
      Gender Unisex Unisex
      Trademarked terms DriDown DriDown

      Sierra Designs Mobile Mummy 800 3-Season Sleeping Bag

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      Rated 5out of5
      by fromFabulous!! I had initially purchased the 2 season version of this but, on my first trip this year when it plunged down to 40 degrees and I was shivering I realized that I really needed the three season. Yes...I moved out of the ultralight zone, but, really....this back is only 2.5 pounds and the added warmth well made up for the added weight. The trip I took (which this review was based on) was a three day backpacking trip which was pretty warm during the daytime with a drop down to somewhere between 40 and the mid 40's at night. So - pros and cons: Pros: 1) This is my absolute dream design for a bag because I really need to have the ability to both move my arms around in the middle of the night and/or kick my feet out of the bag to cool off without sacrificing my upper body warmth. Check! 2) The head design is awesome!! It fit around my head beautifully and I didn't need to cinch things all around to get rid of air pockets and ending up feeling utterly claustrophobic! I just slipped it up and over in the middle of the night with the bag unzipped to my mid-chest and I was warm as toast. 3) Foot box was just right in size adding a little extra space than in the other mummy bags I've used and the added fill was perfect. I never slept with anything more than a pair of liner socks on my feet. 4) The middle zipper design is fantastic! I am a side sleeper and it was wonderful to be able to just roll to each side with the zipper unzipped a bit and not encounter one side being closed off and my arms getting stuck or having it all bunch in my face. Also, one of the nights when I did overheat I was able to get on my back, unzip the bag down the middle but keep my arms cozy inside the sides of the bag while my core cooled off quickly. Wow! Cons: 1) (a small one) The best thing I learned to do was NOT unzip this bag to the bottom of the zipper in the middle of the night. I have had to learn this with other bags as well but it was made a little more awkward with this bag because there are two zipper pulls to have to thread through and align just right in order to pull the top pull up. Remember, the reason for the second pull is so that you can "wear" your bag on your upper body, unzip the bag upward with the bottom pull and stick your legs out so you can walk around camp or not have to get our of your bag fully in the middle of the night. Anyway....don't do it!! The zipper is sticky and one night I actually had to throw on my headlamp and sit there for 5 min. jiggling this thing all around to get it to finally all line up correctly. On the plus side, however, I didn't have to try to do this on the side like you do with regular mummy bags!! That was a bonus! 2) I have the regular size. I found the arm holes just a leeeeetle bit snug and would have liked them to have a slightly larger cut. This might be the case with the long version but I don't know. I never utilized the feature of wearing the bag around because it wasn't cold enough even in the middle of the night. So I can't speak to that. My feeling is, though, that unless I'm car camping with nice high camp chairs that won't be likely to snag the material of the bag in any way, or get it dirty, I'm just as happy to leave it in my tent til I go to bed. So it gets my full, 5 star approval and I'd give it 10 if I could!!
      Date published: 2014-07-13
      Rated 5out of5
      by fromInitial Impression: Even Better Than You Think This might be the greatest, stupidest-looking invention ever. In raw-numbers terms, it's good as-is at a little over 2lbs for a 15F rating, but if they make a version out of lighter fabric and 900-fill down, it would be epic. Top-center zipper should have been done ages ago. Even if it weren't convertible, that's quite a bit easier in a cramped tent. And it makes the hood-sized hood possible. By taking out the extra space of a normal full-width sleeping bag hood and giving it shoulders, it fits you more like a shirt or jacket, so it rolls with you instead of letting your shoulders pivot inside. So it's side-sleep-amazeballs. But the best parts don't seem to be described well or pictured or even in a review I've seen anywhere yet. The center-zipper pulls up from the bottom to allow you to walk around in it. Obvious, right? They've got all these wonderful pictures of human caterpillars with their ankles sticking out walking around. That's the core feature! But nobody seems to have made it clear that because this is made possible by the center zipper, YOU CAN JUST KEEP UNZIPPING IT FROM THE BOTTOM. If you unzip up to your waist, you can just stuff the extra bag into itself behind you. Your legs are completely free for walking around. Pockets are accessible. And more importantly, 2am bathroom runs are possible, without having to fully leave your sleeping bag. But that's not all! It's down, and highly compressible! So.... since I already had it smushed up to roughly jacket dimensions, could you cram it under a waterproof jacket and wear it like an insulation layer? YES YOU CAN. Obviously, it will not insulate quite as well smashed down that much, but it is FAR warmer than other fancy lightweight down jackets I've tried even smushed. You will look ridiculous. Like you're smuggling pillows in a windbreaker. You will probably have to lay on your back with the jacket unzipped to compress the bulk of the bag in order to get your jacket zipped. But I feel like this absolutely needs to be made clear: this sleeping bag CAN BE WORN UNDER A JACKET instead of an insulation layer (and it will likely be warmer than any insulation layer you carried before), which makes it the greatest sleeping bag invention in ages. It won't replace a truly ultralight bag, to be sure. If they built one of lighter fabric and higher fill power down, possibly in a narrower cut (it is VERY wide and roomy) it would be the sleeping bag of the century. Pretty please, Sierra Designs? I promise to test it thoroughly if you send me an ultralight prototype version.
      Date published: 2014-11-19

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