Great winter camping bag! I spent 30 days on the snow with this bag on two different expeditions in two separate ranges in AK. This was my first synthetic bag and I was surprised that it wasn't that bulky, but was still toasty on the coldest of nights. I loved not worrying about the bag getting wet since it's synthetic, not down. I'm 6'3" and I have the Long model which has tons of room for boot liners, extra clothing and room to roll around without feeling claustrophobic. Nice little pockets near your head for watches/ipods/etc.