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  • Underside insulation has been eliminated and replaced with a sleeve for a Big Agnes pad or any 25-in.-wide sleeping pad (sold separately)
  • Integrated full pad sleeve has stretch fabric panels on the sides to accommodate different pad thicknesses
  • Unique quilt-like construction and rectangular shape turn your sleeping bag into a backcountry bed; compartmentalized, horizontal baffled construction prevents down shifting
  • DownTek water-repellent down repels water while maintaining insulating value; it absorbs 30% less water and dries 60% faster than untreated down
  • DownTek provides antimicrobial and antibacterial protection; environmentally safe PFOS/PFOA free Nano treatment technology
  • Free Range Hood design gives you the freedom to lift your head while snuggled in the hood
  • New cordlock lets you un-cinch the hood with one hand
  • Pillow Barn keeps your pillow from slipping away during the night
  • Down-filled collar at top seals around the neck to prevent warm air from escaping and cold air from entering
  • Large draft tube located behind the zipper prevents warm air from escaping and cold air from entering
  • Continuous oversize draft wedge insulates the connection between the bag and pad to prevent cold air from entering
  • Double zippers allow entry from either side of bag and when unzipped allows top of bag to be used like a comforter
  • Thanks to their double zipper design, all Big Agnes Park bags mate easily
  • Interior fabric loops keep sleeping bag liner from twisting and bunching (liner sold separately)
  • Exterior loops for hang drying or storage
  • Includes mesh storage sack and nylon stuff sack


View all Big Agnes Men's Sleeping Bags

REI membership


Best Use Backpacking
Temperature Rating (F) 15 degrees Fahrenheit
Temperature Rating (C) -9 degrees Celsius
Weight 4 lbs. 7 oz.
Shell Ripstop nylon
Zipper Location Left, Right
Insulation Type Down
Water-Resistant Down Yes
Fill 600-fill DownTek down
Fill Weight 29 ounces
Lining Nylon taffeta
Sleeping Bag Shape Semirectangular
Fits Up To (in.) 78 inches
Shoulder Girth (in.) 80.5 inches
Hip Girth (in.) 75 inches
Stuff Sack Size 9 x 20 inches
Stuff Sack Volume 21 liters
Compressed Volume 11.5 liters
Gender Unisex
Rated 5 out of 5 by from Great sleep I paired this bag with the bigA aircore 72*25*3.25 sleeping pad( must have pad n insulation on bottom) during an Oct hike on top of the molgollon rim I'm 6'7" and 26" in in the shoulders still had plenty of room the double zippers were very handy in the early evening warmth and the pocket in the neck area definitely sealed the warmth in later on never felt any leaking along the zipper witch I had been worried about from other reviews about the double zippers In closing excellent experience money well spent thanks for the good time bigA Oh ye X2 bought a Dido setup for my son
Date published: 2016-10-23
Rated 5 out of 5 by from Perfect Mummy for the big guy I've searched long and hard for a packable bag. I'm 6'3 260 lbs and broad shouldered. Most bags are an inch or two too short and always tight in the shoulders for me. Not any more. This bag packs down small, and is so comfortable. It has enough room you can actually change clothes inside the bag. If you are a taller big guy, look no further. BA has you covered.
Date published: 2016-04-25
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What is the actual minimal weight of this sleeping bag? Under Specs it states "Weight 4 lbs. 7 oz." and "Fill Weight 29 ounces" and I am wondering what the difference is between the two.

Asked by: Turko
The total weight of all materials is 4 lbs. 7 oz. The fill weight shows how much down insulation is in the bag.
Answered by: REIservice
Date published: 2017-01-04

I just picked up my Big Agnes Summit Park 15 bag at REI. I noticed the tag says "Summit Navy Long" not "Long Extra-Wide. Did REI ship the wrong bag?

Asked by: Georgia
Big Agnes only makes one size of the Summit Park. On the legal tag at the foot area, item # should be BSPL16.
Answered by: REIservice
Date published: 2017-04-06
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