Sleep warm without the weight. 300g/m² hollow-fiber insulation in a 210T water-resistant shell makes this mummy bag comfortable down to 39°F, with a breathable pongee lining that never feels clammy. The hood cinches tight to lock in heat, and the included compression sack packs it down to backpack size. Unrolled it's 82.7 x 31.5", and it weighs just 2.6 lbs. A dependable 3-season bag for campgrounds, cabins, and summer overnights.