Ideal for camping at higher altitudes or in cooler months, the Coleman Dunnock Cold Weather Adult Sleeping Bag helps you sleep comfortably in temperatures as low as 20 degrees Fahrenheit. This sleeping bag features Fiber lock construction that keeps the insulation from shifting, reducing cold spots and increasing durability. A cotton cover and ultra-soft cotton flannel liner also keep you warm, as well as a Thermolock draft tube that prevents heat loss through the zipper. The bottom of the bag unzips to provide extra ventilation on warmer nights. A two-way patented ZipPlow zipper system plows fabric away from the zipper to prevent snags and frustration. And the Roll Control design and Wrap 'N Roll integrated packing system make this lightweight backpacking sleeping bag easy to roll and pack. The Dunnock Big and Tall Cold Weather Adult Sleeping Bag has a spacious design that can accommodate most people up to 5 feet 11 inches in height. It is machine washable for easy cleaning.