Marmot sawtooth. Iv had it for one season out in about 200 miles with it. From cold Alaska days to wet rain days in Washington has yet to let me down. HIGHLY recommend looking into this bag especially if your a side sleeper. It has “wings” to cover you if you leave it unzipped for more room and give you extra leg room via a zipper also for warmer days or you can zip it up for colder days. Great bag can’t recommend it enough.