The Snugpak Sleeper Expedition sleeping bag is our most extreme temperature sleeping bag in the Sleeper range which will work in conditions right down to -17°C. This bag has been designed to give you comfortable bag using soft-touch,siliconised strands. It will give you great insulation for 4 seasons. The Sleeper Expedition sleeping bag is very warm and a good priced addition to the Sleeper range. You will wake up refreshed in the mornings.