I used this for several months. First I am not a big person and the bag was too narrow in the shoulder area. I hated the way it worked. The zipper would get stuck in the up position and did not work smoothly. I am 5'3", but bought the extra long one so I wouldn't feel so cramped. I wouldn't recommend this for really cold nights. I found the 3 temperature ratings on the bag confusing. I did like that they included a stuff sack in addition to a larger bag that is good for storage in the off season. It's a pretty color. If the weather was pretty cold out, it did not keep me warm, but did fine down to 40 or so degrees.