Big Agnes Grouse Mountain 15 - Regular

Priced: $168.97 - $259.95 Rated:   - 4 stars out of 5 by 6 reviews.
Big Agnes Grouse Mountain 15 - Regular
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Color: Gray / Burnt Orange
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Big Agnes Grouse Mountain 15 - Regular - Camp in comfort with the cozy Grouse Mountain 15° - Regular sleeping bag.
Integrated pad sleeve with unique design keeps you securely attached to the pad from the hips while allowing freedom of movement for your legs.
Half pad sleeve with adjustable strap holds ANY 20" wide rectangular or mummy shaped pad.
Built in pillow pocket holds a fleece or Big Agnes® pillow.
70" YKK #8 zipper.
Mate together a left and right zip bag with the same size zipper.
No-draft wedge insulates the connection between bag and pad.
Fill Type - 600 fill goose down.
Fill Weight - 1 lb 3 oz.
Bag Weight - 3lbs.
Shoulder Girth - 67.5".
Hip Girth - 64".
Foot Girth - 43".
Stuff Sack Size - M-8"x17.5".
Compressed Bag Size - 8"x7".
Requires a 20" / 51cm wide mummy OR rectangular pad.


  • No-draft collar seals around neck to keep cold air from sneaking in


  • Tough nylon ripstop outer shell provides durable protection
  • Interior fabric loops to keep your liner in place
  • Interior fabric loops for sleeping bag liners
  • Insotect Flow construction eliminates potential cold spots, and its vertical baffles allow for a more uniform body heat distribution
  • Built in pillow pocket holds a fleece or Big Agnes pillow (sold separately)
  • Cotton storage sack and nylon stuff sack included


  • Integrated half pad sleeve with unique design keeps you securely attached to the pad from the hips up while allowing freedom of movement for your legs, more like a traditional mummy bag.
  • Half pad sleeve with adjustable strap holds ANY 20" wide rectangular or mummy shaped pad (sold separately)
  • No-draft wedge insulates the connection betwen the bag and the pad


  • Rated down to 15F, this bag is best suited for cold, sheltered nights in the mountains and winter nights in milder climates
  • Big Agnes sleeping bags leave out the bottom insulation, both to save weight and because down compressed by your body weight loses most of its insulating value
  • No-draft zipper tube insulates along the length of the zipper
  • Warm, 600-fill down compresses and rebounds well and features a high warmth-to-weight ratio


  • Mummy shape decreases weight and packed size


  • 70" YKK #8 zipper
  • Mate together any of Big Agnes left and right zip bags with the same size zipper


  • Built-in pillow pocket keeps your pillow in place
The Big Agnes Grouse Mountain 15-Degree Sleeping Bag uses 600-fill goose down and a unique baffle design to keep you toasty from spring to fall. Smart design features keep your padding where you want it so you get a good night's rest, even if you have that terrifying dream in which you're being chased through the woods by a doughnut.

Backcountry Edge

With warm, compressible goose down insulation and a thermally-efficient mummy cut, the Big Agnes Grouse Mountain 15 Degree sleeping bag has the features and functionality that make it ideal for three-season backpacking and camping.

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Average Price History: Price History
Review RatingNumber of Reviews
Cold Rating:15°.
Down insulation:600 fill goose down.
Fill Material:600 Fill
Fits to Girth:Regular: 67.5" Long: 72.5"
Fits to Length:Regular: 5' 10" Long: 6' 6"
Item Weight:Regular: 3 lb 0 oz Long: 3 lb 6 oz
Liner Material:Stain-Resistant Nylon
Lining:Soft, breathable down proof nylon with stain-resistant finish.
Note:bag requires a 20-inch-wide rectangular- or mummy-shaped sleeping pad to be fully insulated (sleeping pad available separately)
Other:Stuff Sack and Storage Sack Included
Packed Size:8" x 17.5"
Pad sleeve:Nylon ripstop. WR surface treatment to repel water.
Recommended Use:Three-Season Backpacking or Camping
Shell:Down proof, nylon microfiber rip-stop. WR surface treatment to repel water.
Shell Material:Nylon Microfiber Ripstop with WR treatment
Temperature Rating:15 Degrees F
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Big Agnes

Big Agnes Grouse Mountain 15 - Regular Reviews:

Positive Reviews:

I've used this bag in various climates and on countless trips to the back country. If you like a little wiggle room, are a side or stomach sleeper, or if you toss and turn a lot then this bag is for you. I usually use a second summer bag inside this one like the never winter by marmot on those sub zero nights and find that with both, I still have plenty of room, very warm, and it's like sleeping with an extra blanket inside the bag. Make sure to have a good R rated pad to go along with this bag and you are set. I've never slipped off the pad at night due the way the pad is secured to the sleeping bag itself. It might not be the lightest set up I've seen or used, but I'll sacrifice a little weight for a good comfortable nights sleep after a grueling climb or 20+ mile day.

Ryan at on 10/28/2011

There have been some bad reviews about this bag, but i decided to purchase anyways. Man, am I glad that i did! I love the bag, it is definitely roomy inside and my feet feel less cramped in this bags' footbox than I did in my previous mountain hardwear bag. it is really warm, packs down fairly small, and isnt too heavy. While this is a 15 degree bag, please be aware of how companies rate sleeping bags. A 15 degree bag will keep you alive in 15 degree temperatures, but will not be a comfortable sleep by any means. This bag performs best at 25-40 degrees. I camped in the bottom of the Grand Canyon with 70-75 degree nights and the bag was great to just throw over my body like a blanket while in the hammock.The bag is an awesome 3-season bag that is extremely versatile.

Chris jenney at on 07/25/2012

I have been on so many backpack trips and have only one other bag come close to this one and it was a down army bag for soldiers. It locked onto my pad, I could turn all night, the zipper was sturdy and smooth, the bag was warm while the others on our scout trip were very cold, I had the best night I ever had on a backpack trip. The bag is light, compact, warm, durable, its my baby now and I am lovin it.

James Smith at on 06/03/2012

I am amazed that someone even rated this bag poorly. Have had this bag out on 2 trips thus far since purchasing and have been extremely warm and comfortable at 23 and 36 degrees Fahrenheit. Big Agnes is definitely the way to go! Sleeping pad and bag are both very light and compact and barely make a dent in my pack.

Jason at on 06/17/2012

Negative Reviews:

I bought this bag/pad based on the previous review and a desire for a compact set up for ADV motorcycle trips. I didn't find it very warm at 30F in Colorado and it was sticky on my back in the warmer climate of the desert due to the pad only being separated from my skin by a layer of nylon. My BA mummy pad is insulated and stays put but the bag has very tight dimensions and was claustrophic. My regular bag is too short and I am only 5'10". The constriction is poor. I have feathers coming out and the zipper jams every time. It has the look and feel of a chain store cheapie. I am going back to my old bag.
PS it is quite compact and light, just not warm, comfortable or well made.

Pat Wright at on 05/22/2012

Nice construction , design and pack size....but not warm enough for cool, damp,Canadian Fall nights .

geop16425 at on 09/22/2012