Sleep comfortably during any season with the ALEUTIAN Sleeping Bag from The North Face. This four-season sleeping bag features Heatseeker Eco synthetic insulation for warmth in temperature as low as -18C. The highly compressible bag is made from 30% post-consumer recycled materials that can still perform in every condition. The wraparound footbox zipper allows the bag to lie flat for a more comfortable sleep. The roomy cut and draft collar provide comfort while preventing heat loss, and combine with the vaulted footbox for exceptional warmth all year round.