Originally designed for people operating in Arctic conditions, the Snugpak Softie 15 Discovery offers maximum warmth in extreme temperatures yet packs into a compact size. This extreme cold weather sleeping bag keeps you warm to -4°F and features Softie Premier insulation with heat-trapping properties. The mummy-style shape and Snugfit hood with an adjustable cord ensures you stay warm even as the temperature drops. Additionally, this sub zero sleeping bag combines Paratex Light and Steelplate extra tough fabric for breathable, moisture-wicking comfort and windproof/water repellent protection.