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Description

If you're looking for a versatile, lightweight sleeping bag, the Mystic SL fits the bill.

Big Agnes made the Mystic SL Down Sleeping Bag to be a lighter-weight, more compressible version of the Lost Ranger 15-Degree Bag. The Mystic features 800-fill down for coziness during your springtime backpacking trip in Utah's canyonlands or your summer jaunt into the Rockies. A DWR-coated shell prevents light precip and morning dew from dampening the down, so you can sleep sans tent if you feel like it. As with all Big Agnes sleeping bags, a sleeve holds your sleeping pad so you don't roll off in the middle of the night and get chilled or wake up sore the next morning. Use Big Agnes' rectangular sleeping pads with the Mystic.

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Big Agnes Mystic SL Sleeping Bag: 15 Degree Down

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Here's what others have to say...

what size dry bag or compression bag do I...

Posted on

what size dry bag or compression bag do I need for this product in regular size?

Responded on

William, I use a 15L dry bag and my wife uses a 18L for her Lost Ranger and they fit fine. With a compression bag you can go smaller. FYI, this bag comes with a stuff bag that is water resistant.

Responded on

I have an older version of this bag and I can fit it into a 5L dry bag but it is a bit of a fight to make it fit and get the bag sealed. 10L would be the best option in my opinion.

5 5

Quality Bag

I have been very happy with the performance of this bag. I bought my wife the Lost Ranger which is a roomy bag and I found this on sale so I purchased it. I feel it does restrict my movements because of the squared mummy style. It is a little snug if I sleep on my side. I am a fan of down bags and this one packs down small, is lightweight and comes with both a storage sack and a stuff sack. As with all Big Agnes bags, it does not have any insulation on the bottom and relies on your sleeping pad for that. You will want the 20 inch mummy style pad for this bag. I prefer the Big Agnes Dual Core pad.

Responded on

Actually you want the rectangular pad for this bag. If the mummy works for you that's cool, but BA recommends the rectangular (mentioned in the product description here). Otherwise you might end up with sections that have no insulation and could lead to some heat loss.

I am thinking of trying out the Big Agnes...

Posted on

I am thinking of trying out the Big Agnes "sleep system" and I am hearing a lot of people say that it is not comfortable if you're not your back. I sleep mostly on my stomach, anyone have any experience with warmth and comfort in this position? I am not sure if there is much of a difference but...

Responded on

Sammy, I also saw your question in the Lost Ranger description. This bag does not have nearly the room of the Lost Ranger. I can sleep on my side but it feels more confined due to the style of this bag.

Responded on

I sleep on my stomach just fine, and side too. I'm 6 1 215lbs.

5 5

Awesome!

I got this to upgrade from my BA Encampment, the weight savings alone was well worth it. It feels warmer and softer compared to my old synthetic. I only wish BA would put a 25" pad option on all their bags.

Long right side zipper?
Every bag I get...

Posted on

Long right side zipper?
Every bag I get has a right side zipper. Do you not have a Long with a right side zipper?

Best Answer Responded on

It shows as being available. Select it from the drop down menu.

5 5

Great Bag

As always, BA makes great, innovative products. My only quibble is with the temp rating, but to be fair, I usually have that with temp ratings. I'd put this 15 degree bag at more like 30, but that's just my opinion. I still wouldn't trade it for the world - super light and well designed.

5 5

YES!!!

Absolutely LOVE my Mystic!! ... both my husband and I own and enjoy this 'as-comfortable-as-our-own-bed' Big Agnes bag/pad/pillow!!! (We had read one should, for camping, try create, as close as possible, one's own bed at home!! The Big Agnes system has accomplished this for us!!) Our last backpacking trip was a bit 'rainy' and cool, but we were very snug!!! Thanks Big A !!! : )

4 5

Great bag

This is a great bag and good quality. I am 6' 170 so I got the long and it was a good choice. if I were to do it over again I would maybe get the mummy version because I am skinny and I have a ton of room in my feet and legs so it takes 30 min. or so to warm it up but once I do it is great. I love the fact that I stay on my pad but it is a little okward to sleep on my side but it works. One thing to know is that it is a big set up so if your backpacking tent is small you may want to consider something else. for example if your tent is 30 sq feet or less and you are sleeping two people in the tent you may not be able to fit two of these. I really like it and would buy it again.

The stuff size noted in your literature...

Posted on

The stuff size noted in your literature for the Big Agnes long is 8x6 inches, while the stuff bag provided is 8x17 inches. My questions are, is the stuff bag provided waterproof and if I purchase a Granite waterpoof compression bag, what size do I order. Many thanks for your time and efforts, I am getting smarter, but it takes time!!!!

Best Answer Responded on

It is water resistance but not proof. I am not sure but I looked into it and in most bags I needed a medium. it usually says on the package.

What size Exped DownMat could I use with...

Posted on

What size Exped DownMat could I use with this bag and what are the max dimensions?

Best Answer Responded on

it is meant for a 20" wide. and if you buy the regular you need 72" and the long you need a 78". I have heard of people using other pads and they worked. 20" by 78" is the max for the long

Other than the 5 oz, is this bag worth the...

Posted on

Other than the 5 oz, is this bag worth the price over the Lost Ranger, does it compress considerably more--important for me because I pack a lot of my kids stuff too.

Best Answer Responded on

This is opinion but if I was to buy over again I would probebly buy the lost ranger. I have the mystic and my buddy has the lost ranger. It is nice to save the extra weight and have a little bit smaller bag but the added worry is almost not worth it, (thiner and more expensive). having said all that, i still love this bag.

Responded on

Old question but I have both bags (bought the Lost Ranger for my wife) and most of the time I use the Lost Ranger simply because of the extra room.

Responded on

I've got both and don't regret the upgrade. My LR is only a regular and I felt like I needed a long (I'm 6'1"). Had that not been the case...I probably would have stuck with the LR.

Does it have a full length zipper that can...

Posted on

Does it have a full length zipper that can be unzipped at the bottom to stick your feet out?

Best Answer Responded on

The zipper goes down to about 10" from the end of the bag. I hope that's enough.

5 5

Great, light backpacking bag

I have a couple of other Big Agnes UL/SL products that I love and this bag is no exception. First night out with it at close to the 8k level got pounded by heavy winds and wet snow but was toasty through the night. Being able to slip my existing rectangular pad into the sleeve was great. Because of the heavy winds and precip some moisture did drip onto the bag but nothing seemed to penetrate. I'm a bit of a thrasher at night but this bag has plenty of leg room so it was not a prob.

Why are the longs less expensive than the...

Posted on

Why are the longs less expensive than the regulars?

Best Answer Responded on

i think backcountry just got the prices switched. big agnes has their msrp the other way around, with the regulars being $389 and the longs $409.Nice catch. It should be sorted properly now. Thanks!

Does the down quality really affect how...

Posted on

Does the down quality really affect how warm the bag is? If one is 15 degree and 600 fill, does that make a difference for the 800 fill one?

Best Answer Responded on

It makes a difference in the weight. 800 fill means that one ounce of down fills up 800 cubic centimeters, whereas 600 would be 600 cubic centimeters. So the higher number actually means that less down is used to obtain the same warmth, because it is a higher quality down that fills more for its weight, making the bag lighter. Or alternatively, if the same weight of down were used, the higher quality down (800 fill) would be warmer because it would have that extra 200 cubic centimeters of insulation per ounce.All down traps air. This is how it insulates. The higher fill power e.g. 750, 800, 850, etc. has more to do with compressibility. Now your sleeping bag has a lower temperature range & weighs less.

Responded on

this is a great explanation of fill power from Jeff here Spencer. But just to clarify fill power is the number of cubic that one ounce of down will occupy in a controlled environment(in³/oz). There are several ways that companies test this and come up with these numbers but as far as the benefits of a higher fill power, Jeff is right on!

5 5

The bag I have been waiting for Big Agnes to Make

My one complaint with the Lost Ranger was that it was a little heavy and should have used a higher quality down. Well this is the answer. This is the perfect bag for me. I am a little claustrophobic and the smaller mummy bags constrict me too much. This one combined with the way the pad slides into it allows me to toss and turn without a problem. It is a great bag.