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The Big Agnes Mystic Sleeping Bag is filled with light, compressible 800 fill goose down and weighs only 2 lb 7 oz. Like all Big Agnes sleeping bags, the Mystic has an integrated pad sleeve so you never roll of your pad again. Removig the insulation on the bottom also reduces weight since compressed down has no insulating effect. The Mystic is an upgraded version of the popular Big Agnes Lost Ranger Sleeping Bag. We recommend the Big Agnes Insulated Air Core Pad for use with the Mystic sleeping bag.

Ideal for cold weather, the Big Agnes Mystic integrates your sleeping pad to improve the heating efficiency of the insulation you carry.

Classic Series bags are our most popular sleeping bags. These semi-rectangular bags excel in nearly all situations, from backpacking to car camping, making them the most versatile in our line. With more room than standard mummy bags, they're extremely comfortable and still offer a great value with modest packed size and weight.
Features
Integrated pad sleeve. Never roll off your pad again
Rectangular shape offers more room in foot box and shoulders
Recycled mesh storage sack & nylon stuff sack included.
Built in pillow pocket holds a fleece or Big Agnes Pillow
Interior fabric loops for sleeping bag liners
70" YKK #5 zipper in Mystic. Mate together our left and right zip bags with same size zipper.
No-draft collar seals around neck to keep cold air from sneaking in.
No-draft wedge insulates the connection between the bag and pad.
No-draft zipper tube insulates along the length of the zipper.
Shell and Pad sleeve: Toray fabric. Ultralight, high thread-count, rip-stop nylon with Kudos FP super durable water repellency technology.
Interior Lining: Nylon taffeta.
LEFT OR RIGHT ZIPPER? When you are in the bag, on your back, the right zip will be on your right side, left zip on your left side.

Stuffed with high-quality 800 fill power goose down, the Mystic SL 15° from Big Agnes® features a roomy semi-rectangular shape.
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.
No description provided.
| Average weight: | 2 lbs. 7 oz. |
|---|---|
| Average weight - metric: | 1.11 kilograms |
| Country of Origin: | China |
| Degree: | 15F (-9C) |
| Draft Collar: | Yes |
| Fill: | 800-fill goose down |
| Fill weight: | 17 ounces |
| Fits up to: | 6 ft. 6 in. |
| Gender: | Unisex |
| Hip girth: | 69 inches |
| Insulation: | 800-fill down |
| Insulation Type: | Synthetic |
| Lining: | Nylon |
| Manufacturer Warranty: | Lifetime |
| Material: | [Shell] Toray (ultralight ripstop nylon) with DWR; [Lining] nylon taffeta |
| Max User Height: | [Reg] 5ft 10in (178cm); [Lng] 6ft 6in (198cm) |
| Max. User Height: | 6 ft. 6 in. |
| Primary Use: | Backpacking |
| Recommended Use: | Spring through autumn camping & backpacking |
| Shape: | Squared-off mummy |
| Shell: | Ripstop nylon |
| Shoulder / Hip / Foot Circumference: | [Reg] 70 / 66 / 54in (178 / 167.6 / 137cm); [Lng] 73 / 69 / 55in (185.4 / 175.3 / 140cm) |
| Shoulder girth: | 73 inches |
| Sleeping bag shape: | Mummy |
| Storage Sack: | Yes |
| Stuff Sack: | No |
| Stuff Size: | [Reg] 8 x 5in (20.3 x 12.7cm); [Lng] 8 x 6in (20.3 x 15.3cm) |
| Stuff or Storage Sack: | Both |
| Stuff sack size: | 8 x 17.5 inches |
| Temperature Range: | 3-Season (10-35) |
| Temperature Rating: | +15°F |
| Temperature rating (C): | -9 degrees Celsius |
| Temperature rating (F): | 15 degrees Fahrenheit |
| Weight: | [Reg] 2lb 7oz (1106g); [Lng] 2lb 10oz (1191g) |
| Zipper Draft Tube: | Yes |
| Zipper Length: | Full |
| Zippered Foot Box: | No |
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View other products from Big Agnes classified in Hiking & Camping > Sleeping Bags & Pads. View all products from Big Agnes.
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Sometimes brands make complementary products for the opposite gender that coordinate with this product, we also try to show these products below.
| Big Agnes Mystic SL 15 Sleeping Bag RegularUnspecified | $389.00 |
This product is available in the following colors:
Click any color to show the product in that color
| Green / Black |
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 | |
|---|---|---|
| Green / Black | N/A | |
| Long - Left | 408.95 | |
| Long L Left | 409.95 | |
| Long Left Zip | 389.95 | |
| Left Zip | 409.00 | |
| Long/Left Zip | 409.95 | |
| Reg/Right Zip | 389.95 | |
| Regular - Left | 388.95 | |
| Long - Right | 408.95 | |
| Regular Right Zip | 389.95 | |
| Reg/Left Zip | 389.95 | |
| Long Right Zip | 389.95 | |
| Regular - Right | 388.95 | |
Mountains Plus Outdoor Gear offers this product at $379.95, but does not provide any color/size information.
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Great bag | |
| Rating: | ![]() |
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. | |
| spencer bowen at Backcountry.com on 04/28/2009 | |
Great, light backpacking bag | |
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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. | |
| meandmyaussies2398383 at Backcountry.com on 10/03/2008 | |
We love our Big Agnes Mystic | |
| Rating: | ![]() |
| Because the pad is inserted into a pocket in the bottom of this bag, you NEVER wake up with the pad upsided against the side of the tent while you are shivering on the ground. This is a GREAT feature. You can also turn while in the bag, great since we are sometimes side or stomach sleepers. The pad makes the bag stay put while under you. Very lightweight and comfortable. Since we have two (a left and a right) they zip together great, even though his is a long and mine is a regular bag. | |
| Mountain Mom at REI on 07/22/2008 | |
The bag I have been waiting for Big Agnes to Make | |
| Rating: | ![]() |
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. | |
| Michael Sherwood at Backcountry.com on 05/07/2008 | |
YES!!! | |
| Rating: | ![]() |
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 !!! : ) | |
| sjk100317637 at Backcountry.com on 07/21/2009 | |
Great Bag | |
| Rating: | ![]() |
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. | |
| goldbaby100091055 at Backcountry.com on 08/18/2009 | |