The North Face Dolomite One Bag Sleeping Bag is the only sleeping bag you'll need. With a 3-in-1 interchangeable design, the North Face Dolomite One Bag Sleeping Bag is perfect for temperatures ranging from 15 to 50 degrees. Both layers combined offer lofty insulation for 15-degree weather, the yellow mid layer can be used alone at 30 degrees, and the outer blue layer is great for warmer nights with a temperature rating of 50 degrees. Get a good night's sleep in the North Face Dolomite One Bag Sleeping Bag.