Took this bag hiking on the AT in October. Easily fit in stuff sack, which fit in sleeping bag compartment of my backpack. High quality materials, such as zipper, draw strings, stuff sack. Only down to high 40's on coldest night, but kept me comfortable. Quite warm with temp in 50's. Seems it would work well in colder temps. Great quality bag with a great price to match. I would definitely recommend it for any cold weather camping.