Stretch seams and ultralight 15D Airlight nylon help the MontBell U.L. Super Stretch Hugger 1 15-Degree Down Sleeping Bag weigh only 2lb 4oz, which helps you hike faster and longer on 3-season backpacking trips. This 15 down sleeping bags stretch seams mold to your body to reduce dead space and increase warmth. Multi-Box baffle construction ensures the Super Stretch Hugger has no cold spots, and the sealable eight-inch baffle at the feet lets you shorten it for smaller users. Youll be happy to have this ultra-light bag whether youre on a spring mountaineering trip or camping in the winter.