Justin Buckleswrote a review of Big Agnes Hog Park Sleeping Bag: 20 Degree Synthetic on September 29, 2011
You don't really have to be a hefty critter (pardon the expression) to enjoy the benefits of Big Agnes's park series sleeping bags. I would classify myself as a pretty average sized guy with a slightly stocky athletic build. I fit just fine inside my Mountain Hardwear ultralamina and North Face Hightail mummy bags but never managed to get a full nights sleep in these bags because I'm a restless sleeper. I like to sprawl out a little and sleep on my side, something you can't really do in most mummy bags, so when I found the Hog Park, I decided to give it a shot. My expectations were pretty low mainly for the fact that all that extra room in the bag would normally create cold air pockets, especially since there's no insulation on the bottom of the bag. I was actually pretty surprised however at just how warm I stayed even when the temps were in the lower 20's (I am a very warm sleeper though). Of equal importance was the satisfaction I obtained from a great nights sleep, the spacious bag gave me the freedom to sleep on my side and sprawl out a bit, especially in the foot box where I need it most. The hood, draft collar, and drawstring work great to trap all that body heat in and fill those voids in the bag as well. I love the liner on the inside of the bag as well, feels more like bedsheets than plastic. Keep in mind though that you will probably want a pad of some kind if the temps are low though since there's no insulation on the bottom. As far as the weight and stuff size go, it's a double-edged sword. Is the bag heavy? yes, is it bulky? sort of, but that's a trade off you'll have to decide on for yourself. Personally, I'm always willing to sacrifice a little bit for a great night's sleep in a comfortable bag. Loved it so much I bought the 40 degree buffalo park for warmer weather as well!