Our most versatile sleeping bag is designed for various temperatures. In colder conditions, you can cinch down the technical hood, zip up the draft-tube protected zippers, and rely on the 750+ Ultra-Dry Goose Down to keep you warm. In warmer weather, the Free-Flow Zip system allows you to unzip in different configurations for superior ventilation and even open it flat to convert the Ascent sleeping bag into a quilt for the warmest nights. These features make the Ascent a true three-season backcountry bag, one of very few available on the market. Close the snaps at the shoulders, open the footbox zipper, and wear the Ascent at camp—hardcore adventures don't have to be hard all the time.