The Snugpak Basecamp Ops Sleeper Expedition is a chunky, warm sleeping bag built for extreme temperatures down to -17°C. This extreme cold weather sleeping bag features highly siliconized synthetic fibers for a soft touch and prolonged lifespan. The Isofibre® insulation retains heat and will keep you comfortable through all four seasons, while the Supersoft lining provides breathable, moisture-wicking comfort. Additionally, the shell of this winter sleeping bag integrates AQUA Light construction for water repellent protection.