Who has the cash to stock a closet full of sleeping bags' Mountain Hardwear designed the Down Flip 3550 Degree Sleeping Bag to pull double duty on low key camping trips, with two levels of Q. Shield water resistant down insulation, a 50 layer on side and a 35 layer on the other, to accommodate a range of conditions just flip it over to suit the temperature. Think of it as being doubly prepared with singular simplicity. A semi rectangular design with five inch baffles offers serious space, and an insulated draft tube and drawcord top seal in your hard earned warm air and lock out drafts. You van even unzip the Flip all the way and use it as a comforter, if that's more your style.