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.