The North Face Gold Kazoo

Summary

Overall this bag has the most bang for your buck in this price range that you can get. It is very warm, I have slept in 30 degree weather with 20 MPH winds, and have stayed toasty and felt no wind.

It is an ergonomically designed mummy bag, so there isn't much space to move around, which took some getting used to at first. The inner fabric is so soft and smooth, it is incredibly comfortable and I feel that i could sustain much colder temperatures in this bag and still be comfortable. 

Summary

This is a good, all-around, bag for three-season use.

I bought this bag instead of the Blue Kazoo as I already had a 20 degree bag. When I got it and saw how light it was, I was skeptical that it would keep me warm. Recently I was able to get into cold weather to test the bag out (17 degrees outside, 24 degrees inside).  The bag was more than adequately warm down to 30 degrees, and only below 25 degrees did I feel like I would need to add some sleeping clothes.  This is pretty good as most manufacturers seem to exaggerate their minimum temperatures!

As an added feature, the inside of the bag is very comfortable — almost cozy.  As I sleep on my side, I was impressed with how easy it was to change sides — the inside was slippery enough to let me turn over yet keep the bottom of the bag on the pad.  While many demean the small inside pocket as useless, I found it helpful in keeping my watch and flashlight ready without having to open the bag.

On the downside, it can be a little claustrophobic for the larger sleeper (like me), but it still had enough room for me, my next day's pants and shirt, and a water bottle.

Overall, I would recommend this to anyone that wants a light bag, but still wants to make sure they have enough overkill for those unexpected cold snaps at early or late season.