The North Face Fission Sleeping Bag: 20 Degree Climashield XP

Not as complicated as nuclear fission, but equally as innovative, The North Face's ultralight Fission 20-Degree Sleeping Bag packs easily and keeps you warm. This synthetic sleeping bag's durable, water-resistant shell protects you from misty fog and wet morning dew. The half-length zipper and welded construction keep this Flight Series sleeping bag at a mere 34oz, so you can pack it in and head out on your spring, summer or fall backpacking adventure. If your feet get hot, bend down, unzip the Fission's zippered footbox and stick your hot feet into the cool night air.