I have a 20 degree zpack sleeping bag. I did many hikes with it and bike-packing adventures and I must say its light and warm. Weight I think is 16 oz. comes with a cuben fiber stuff sack. Was out on weekend in -10 Celsius weather witch is over it's raided value my feet where slightly cold but the rest of my body was warm. I would recommend this bag for weight and size. Cheers!!