The Kelty Tuck EX -20°F Sleeping Bag offers a roomier cover that still provides exceptional warmth and protection through those extremely frigid nights. ThermaPro synthetic insulation, thermal-comfort hood, and natural-fit footbox provide the warmth and coverage you need. Comfort-Tuck zipper system allows you to expose your feet in warmer weather for the comfort you want. Media-integrated storage pocket for device storage. Offset quilt construction. Anti-snag zipper draft tube. Pin-up feature on backside.