KEEPS YOU WARM: Stay warm in temperatures as low as 40°F.
COMPACT: Coletherm Max premium and lightweight fill provides better heat retention with less weight, allows bag to pack into compressible stuff sack....
PREVENTS HEAT LOSS: Thermolock draft tube prevents heat loss through the zipper.
NO-SNAG ZIPPER: ZipPlow patented zipper for snag-free opening and closing.