The Big Agnes Park series bags are perfect for those of us who like a lot of room and don't like a confined space. Very well suited for larger people as well. They have no insulation on the bottom, just a sleeve to slide in a sleeping pad in. Most sleeping pads fit. I use Exped 9 LW and they fit perfect. Not having the bottom layer of insulation cuts down on weight and space; it also allows more insulation on the top layer. In cooler weather you'll need to use an insulated pad.

Both are 1 year old and used once each to test out. They are the most comfortable and roomy bags that I have ever owned.

Big Agnes Buffalo Park 40°F - $100.00 + shipping
Buffalo Park

Big Agnes Hog Park 20°F - $125.00 + shipping
Hog Park
Truth be told, I purchased one each of the Park Series bags and am keeping the 15° and the 30° down filled models.

Send me an email.

Having used both of these bags in the past, and converted to exclusively using the Buffalo Park with a BA IAC pad for canoe tripping, I'd be all over this post if I needed another one. I just don't have the use for another one.

I agree it is the most comfortable bag I've ever used. In my personal experience the 40 degree rating has been very sufficient for canoe tripping and I love the room in that bag!

For all of you folks out there skeptical about the BA sleep system, here is your opportunity to try one out at a good price.