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Details

  • Contour fit allows down insulation to drape comfortably and offers more range of motion inside the bag
  • Insotect Flow construction uses internal gates to keep down from shifting
  • 650-fill-power DownTek down insulation repels water and maintains loft, even when exposed to moisture
  • Ripstop nylon shell with a durable water repellent finish sheds water; soft, breathable nylon lining
  • Ergonomic hood design fits comfortably around face
  • Draft tube behind zipper and down-filled draft collar prevent warm air from escaping and cold air from entering
  • Underside insulation has been eliminated and replaced with a sleeve that fits a rectangular sleeping pad (pad not included)
  • Long and regular bags are compatible with 20 in. wide pads; long/wide bag is compatible with 25 in. wide pads
  • Continuous draft wedge insulates the connection between the bag and pad to prevent cold air from entering
  • Liner loops keep sleeping bag liner (not included) from shifting and twisting
  • Exterior loops for hang-drying or storage
  • Mesh storage sack and nylon stuff sack included

Imported.

View all Big Agnes Men's Sleeping Bags

REI membership

Specs

Best Use Backpacking
Temperature Rating (F) 15 degrees Fahrenheit
Temperature Rating (C) -9 degrees Celsius
Weight
Long Left
3 lbs. 5 oz.
Long Left Wide
3 lbs. 9 oz.
Regular Left
2 lbs. 15 oz.
Shell Ripstop nylon
Zipper Location Left
Insulation Type Down
Water-Resistant Down Yes
Fill 650-fill DownTek
Fill Weight
Long Left
19.5 ounces
Long Left Wide
23 ounces
Regular Left
16 ounces
Lining Nylon taffeta
Sleeping Bag Shape Semirectangular
Fits Up To (in.)
Long Left
78 inches
Long Left Wide
78 inches
Regular Left
70 inches
Shoulder Girth (in.)
Long Left
73 inches
Long Left Wide
80.5 inches
Regular Left
70 inches
Hip Girth (in.)
Long Left
68 inches
Long Left Wide
75 inches
Regular Left
65 inches
Stuff Sack Size
Long Left
8 x 17.5 inches
Long Left Wide
9 x 20 inches
Regular Left
8 x 17.5 inches
Stuff Sack Volume
Long Left
14 liters
Long Left Wide
Unavailable liters
Regular Left
14 liters
Compressed Volume
Long Left
8.8 liters
Long Left Wide
12.9 liters
Regular Left
7.9 liters
Gender Unisex
Rated 5 out of 5 by from Big Agnes bag I wanted a down bag that would reduce weight in my pack, compress nicelt , keep me warm and fit my broad shoulders. Reducing weight and mass was easily done with most bags. When it came time to fit my shoulders the field narrowed to onky a couple. This bag not only fit me but gave enough room to turn inside. You could never do that with one of the mummy bags. I slept comfortably and stayed warm in 20° temps with 80 mph wind gusts in Desolation Wilderness. I would recommend this bag to anyone, particularly those where size (shoulder girth) matters. The pocket to slide your pillow and air mattress is way cool and saves a lot of middle night discomfort.
Date published: 2016-01-09
Rated 5 out of 5 by from Roomy and comfortable alternative to Mummy Bags Purchased this bag two weeks ago to replace my Sierra Designs Zissou 23. I wake up a lot at night and toss and turn and was sick of the confined mummy bag that I had. I am 6' and 200lbs (I fit in regular size) with broad shoulders and I just could never get comfortable in other bags. I used it for the first time last weekend at Upper Sycamore Creek. Temps got down to 28-30 degrees and I have never been more comfortable while sleeping. I used with a Q Core. I imagine the 15* rating is accurate.
Date published: 2015-04-13
Rated 3 out of 5 by from Super Roomy Bag Warm to 25 Degrees Only I love the roominess of this bag and the Big Agnes system with integrated pad, which cuts down on weight (and eliminates slipping off the pad). The concept works: I slept at 18 degrees with total warmth under my back despite zero insulation there from the bag-- just my highly-rated winter sleeping pad. HOWEVER, due to the roominess (I suspect), the bag--which doesn't have a ton of goose down in it--has cold spots below 25 degrees, at least for this 5'6" guy. You MUST fill the dead space with a jacket or other material to go lower than 25 degrees. Due to the wonderful size, I easily put a very lightweight Marmot "Always Summer" 41 degree, 650-fill down bag inside the Lost Ranger and slept super warm at 18 degrees, which means I could go down to 8 degrees with this great combo. Conclusion: Use the very nice lightweight Lost Ranger as part of a two-bag winter system or by itself for the other three seasons, but don't use it alone below 20-25 degrees unless you sleep in all of your winter clothing, esp. a winter jacket.
Date published: 2016-01-14
Rated 5 out of 5 by from best sleeping bag i've ever had. This sleeping bag is lightweight but yet keeps you very warm. I use it for work and hiking. I've read that some people complain about the heat or it's not warm enough but they probably aren't using the recommended sleeping pad. If i get to warm i just open it up a little and to cold has not been an issue. i've tried using the hood and woke up panicking cause i was to hot and couldn't open my bag cause of pure fear of death by sleeping bag. This thing will keep you warm. I've only notice that the feathers are slowly poking through one by one. eventually this may be an issue but as of right now its not a worry. works great with the built in pad sleeve. Also had no issues with side sleeping and with it being to tight.
Date published: 2016-07-02
Rated 5 out of 5 by from Comfy I used this sleeping bag 2 weeks ago and it was awesome. A couple of features that I especially enjoyed were the sleeve under the bag to slide your air mattress in. This kept the bag from twisting during the night and also helped the bag from sliding off the mattress. The other feature is the shape of the hood. I was about to tuck my air pillow in the hood and it stayed in its place all night. Regarding the temp rating - the jury is till out on that. The evening never got cold enough to test how the bag handles 20 degrees (or anything close to it), but I did have the bag 1/4 zipped down because it was too warm. I may re-review this bag after a night in 30-20 degree weather.
Date published: 2016-06-29
Rated 5 out of 5 by from Must buy the sleeping pad thats made by big agnes I love this bag it will keep you warm in the coldest of weather. I use it with a four season tent during the winter and always wake up hot. I really like the fact you can zip the male and female versions together and say even warmer with your lady. The only thing is that the zippers are in the same location on both bags. So if your like my lady and I the zippers. Do not match up the best. I have the long one and she has the short one so my bag doesn't match up the best
Date published: 2016-02-05
Rated 2 out of 5 by from Design a great idea but... Initially loved using this bag, coupled with BA mattress pad inserted into the sleeve on the bottom of the bag. Granted, it was only warm down to about 30 degrees, but for most three-season backpacking in the Sierra's, it worked great. Unfortunately, the pad developed a leak, that from my perspective exposed a weakness of the integrated bag/mattress concept that relies heavily upon the insulating properties of the inflated pad to keep you warm. I've since returned this bag and opted for a more traditional combination of separate sleeping bag and mattress.
Date published: 2015-11-11
Rated 4 out of 5 by from New for 2015 I bought this new bag to replace my old Lost Ranger which has a damaged zipper (my fault). I love the room in Big Agnes bags! When I got the new version, I was not happy to see the internal pillow pocket was no longer there. I liked the internal pocket since I could shift the pillow, put my hands under it and keep it clean by putting a cotton liner over it (I am a stomach/side sleeper). I almost returned the bag, but called Big Agnes to find out why they did this. I learned the pillow pocket is now under the sleeping bag and integral with the pad liner. I tried this out using the pad pillow pocket for two days around the house and finally got used to it. I love everything else Big Agnes did with this update, but still like the internal pillow pocket better. I am an extremely light sleeper, so this was important to me. I realize others may not even use a pillow, and if so, this change is a big improvement for you. I would give this 5*, but the relocation of the pillow pocket is a very slight negative for me, but maybe not for you. The biggest concern for me is keeping the bag clean where my face lies, the same concern exists for almost any other bag. I still don't know of any other sleeping system as comfortable. I am keeping it! And don't waste your time trying to find the old model, they are nearly extinct.
Date published: 2015-04-22
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Is there a pillow pocket on this newer updated version?

Asked by: ejc99f
The Lost Ranger has a stretch fabric panel beneath the hood that creates a designated pillow pocket.
Answered by: REIservice
Date published: 2015-09-20

What sleeping pad(s) would you recommend for the Lost Ranger 15 regular size or go best with? I will be using it for 3 season backpacking. I know the dimensions are 20 wide by 72 length and rectangle for pad recommendation...

Asked by: DragonRoll
The regular Big Agnes Q-Core SLX Sleeping Pad is a great choice for this regular length sleeping bag.
Answered by: REIservice
Date published: 2017-01-05

Does this bag zip together with the Big Agnes Lulu?

Asked by: fivemeters
Yes, you will be able to zip the Lost Ranger into Lulu. The Lost Ranger must have a left handed zip and the Lulu most have a right handed zip. Both bag have the same #8 zipper size.
Answered by: REIservice
Date published: 2016-07-13

Also I am 5'11" 185lbs, almost 6'. Can I fit in a reg. size, or do I have to get the long?

Asked by: ejc99f
Since the regular length Lost Ranger fits up to 5'10", you will need to go to a long to comfortably fit. The long Lost Ranger fits up to 6'6".
Answered by: REIservice
Date published: 2015-09-20

I have the BA Q Core Long Wide, which is 25" wide. Would the long wide version of the Lost Ranger accommodate the 25" wide pad? The specs only state that the sleeve fits 20" wide pads.

Asked by: FlyfishMT
​The long/wide size will accommodate a sleeping pad that measures 25" x 78". Thank you for calling this to our attention. We will have these details added to our website shortly.
Answered by: REIservice
Date published: 2016-12-28

What size compression sack should I buy to compress Lost Ranger Regular to a smaller size?

Asked by: DragonRoll
Find a compression stuff sack that is similar in size to what is listed as the stuff sack size. For the Lost Ranger, 8.5" x 17 or 14 liters.
Answered by: REIservice
Date published: 2017-01-05
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