Sierra Designs Wild Bill CS

A good sleeping bag if you are not hiking to anyplace that gets below 35 degrees. For trips in the summer it kept me warm but just a few weeks ago I went to eastern Washington where it got down to 35-40 degrees I was pretty much chilly throughout the night. A friend went down to New Mexico and Arizona at the same time and had the same problem of being chilly. If you want something that will keep you warm to +15 degrees get a bag with temp. rating of at least 0.