The Hi Country All Terrain Sleeping Bag is 7 configurations in 1 bag. This beauty can go from a +5 through to a -10 comfort rating. You can also make a double winter doona, or 2 summer doona's. This sleeping bag has it all, and is everything you will need no matter where you go. Check out the features on this ripper bag. HI-COUNTRY ALL-TERRAIN SLEEPING BAG