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Move around and get comfortable.

Big Agnes wants to make sure that all you big and tall guys can get out and enjoy some summer camping without having to cram yourselves into a bag made for runway models. The Big Agnes Buffalo Park 40 Degree Synthetic Sleeping Bag gives you the extra space you need without packing on a ton of extra weight.

  • Big Agnes bags don't have ground insulation and are meant to be used with a sleeping pad (not included) to be completely insulated
  • Full-pad sleeve holds any 25-inch-wide sleeping pad and prevents you from rolling off your pad while sleeping
  • Lightweight, synthetic insulation keeps you cozy as the temps dip down
  • The tough, outer nylon ripstop shell features a water-repellent treatment to keep the dew out
  • Built-in pillow pocket holds a fleece or pillow for an enhanced night of rest
  • Interior fabric loops allow you to add a sleeping bag liner on colder spring or fall nights
  • A 70-inch YKK #8 zipper down the left or right side of the bag lets you zip it together with a compatible Big Agnes bag (sold separately) for a warm night with a camp companion

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Here's what others have to say...


Love this bag!

  • Familiarity:I've used it several times

I'm certainly no camping expert but I have to say I LOVE this bag and the concept of pad/pillow insert. Used it on several Moto/Camping rides this year. I've slept in 70 down to 25 degrees and I can tell you that when they say "40 degree bag" they are about right. I was fine even at 35 degrees but on the 25 degree night I was cold... Kinda wish I had gone with the Hog Park bag but I bought a liner fro APLS and it saved the day... overall, a great bag and great system.

What pad sizes work with this sleeping bag?

Pad sizes that work with each sleeping bag size:

Long (Sleeping Bag): 25"x78" or 64cm x 198cm

Anytime you have a Big Agnes question, shoot me an email and I'll make sure to work with you 1-on-1!

Jared D.

Expert Gearhead


Will the Buffalo Park bag accommodate a...

Will the Buffalo Park bag accommodate a pad that is 26" wide? I know that big Agnes pads are an inch narrower....just wondering if there is any play for a slightly wider pad?

Hey Mark,

Sadly the max width is going to be 25" for a normal thickness pad. If you were using a much thinner pad you might be able to squeeze a 26 inch pad in but I'd stick to 25" or narrower.

Anytime you have a Big Agnes question, shoot me an email and I'll make sure to work with you 1-on-1!

Jared D.

Expert Gearhead


I have a Nemo Cosmo Air and Pillowtop pad....

I have a Nemo Cosmo Air and Pillowtop pad. It's 25" wide and 4" thick. Will it fit into the pad sleeve or is it too thick?


Chad, there is some extra room in the sleeve with a 2.5 inch thick pad but a 4 inch thick might be pushing it. It will be close but I can't get a really good measurement.

is the max user height the length of the...

is the max user height the length of the bag? and how small does it stuff to? thanks

The max user height for this sleeping bag is 6'6".

The stuff sack size is 8" x 17.5 "

The compressed bag size is 8" x 12"


Lightweight for summer

    Just got this bag. It is a must to have a sleeping pad with this since there is zero fill on the back side. Luckily you have a sleeve for your pad to go into which keeps it in place. otherwise it is as thin as a bed sheet . I have the long version but if you are taller than 5' 9/10 it s not long enough. pillow pocket is nice addition
    it is a good light weight summer bag