The Backit +15°F sleeping bag is the perfect bag for family camping or to have with any 72 hour kit.  It will keep you warm and comfortable in freezing temperatures (down to +15°F).  The Backit is the smallest and lightest synthetic bag in the market, this results in a lightweight insulation that is very compress-able and warm.   X-Fibre™ micro-fibers are softer and finer than silk, creating a feeling smoother than down.  X-Fibre™ tears up the competition with an amazing 5 to 15 X smaller denier insulation. You must feel the difference! The Backit can be zipped to other Backit bags to create a larger sleeping area. The Ice X also comes with zipper lock, this strap will lock the zipper in place so you don't wake up half way out of the bag in the middle of the night. It also comes with an internal zip up pocket to keep your personal items safe for the outdoor elements. Features: • Provides warmth in as low as +15°F temperatures. • Carrying Weight:  3 lbs • Fill Weight: 1.8 lbs • Carrying Size:  9"x13" • Length:  94" • Shoulder:  35" • Foot: 15"