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Much better than a regular bag
Usually the temperature changes a lot through the night, and sleeping in this bag makes it easy to adjust to the falling temperature (pull your feet in, pull the quilt around you) without waking up. Love it!
None, really. You always want things lighter, but I don't know how to do that.
Absolutely love this bag!!
Roomy, light even for being bigger, super warm, love the ease of getting in and out with the zipper less design, my sea to summit pillow fits right inside!
Plenty of space inside to move around and get comfortable, easier to get in and out than I expected. I'm 5'9" and the regular bag is plenty big. Way warmer than the walmart mummy bag I had been using and packs into a much smaller and lighter package.
Not a ton of space for my head inside the hood with an inflatable Klymit pillow in there.
Best bag I've owned, hands down.
Incredibly comfortable bag. Took down almost to the comfort limit (29°) and stayed warm with next to normal layers. Easy to get in and out of, easy to wrap around and get warm. Slight learning curve but still the most comfortable bag I own. Hood is massive and fits my sea to summit aeros premium (large size) with not issue. Able to roll around and not come uncovered. I am a big guy (6'3", 260) and the long fits me perfectly. Not too heavy for backpacking. Best purchase so far.
Hood could use a cinch cord, only downside I found.
Best bag I've owned
I love the comfort this bag provides via the unique comforter you can easily pull over you and take off if you get too hot. I didn't think it'd be such a big deal but turns out I love being able to kick my feet out of the bottom of the bag when things get too toasty. Overall really enjoying this bag and very satisfied with the purchase.
I'm 5'11" and purchased the regular size bag. Unfortunately, my feet were crammed against the bottom of the bag so I exchanged it for the long size. Backcountry Edge was great and made it happen quickly and easily.
This is a roomy, fluffy bag that compresses well. I can't comment on the lower limits of the EN rating due to having used it out in 40 degree overnight temperatures thus far. It is very comfortable on a cool night, as it is plenty warm, and when needed, allows venting up top and and at the foot box. There's no more getting cold on one side of the body and hot on the other side, like with the zipper down on my other bag. Plus, I can look forward to no more zipper. Lastly, my NeoAir fits well in the dedicated sleeve.
This is not a dislike, but I will remember to wear long sleeves and long pants to bed due to my skin sticking a bit to the inner lining, which feels great when the skin is clean but sticky after sweating profusely and slathering layers of sunscreen.
Great Bag for Car Camping
All features are excellent. Very comfortable. Temperature rating is accurate to a little generous (sleeps a bit colder but that may be me). Foot box is generous and the foot vent is wonderful.
Wish is was lighter and more compressible. If it was, this would be my backpacking bag.
This is absolutely the best bag i've ever had. I was hesitant about the no zipper setup, however the blanket style cover feels so roomy, and just makes you feel like you're in bed. Super soft, and very warm.
None so far.
Most comfortable sleeping bag - better than mobile mummy
I'm a side sleeper. I have been using the sierra design mobile mummy, and while it is more flexible than the typical mummy bag, I still don't sleep well in it. This one is so much more comfortable and the EN rating is better than the previous version. Also like that my thermarest mattres can be slipped in so I don't slide off. Highly recommend.
Nothing I can think of
Design, Flexibility, weight, compression size
Very roomy around the top where you need it if you are a side sleeper or roll back and forth a lot. The non zipper design and comforter top really make this feel like you just have a blanket on you. I haven't tested this in below freezing weather yet but even when I do I plan to have a merino wool base layer ready to go. One of my favorite features is that it can accommodate a 25" pad with the built in pad sleeve.
Wish Sierra Designs would just make a 0 degree rated version of this with 850 or 900 down.
Warm as heck
Design is intelligent and functional. Works great
It's too warm