The World Famous Sports Iron Mountain 10 Degree Synthetic Sleeping Bag is a cold-weather bag for camping. Weighing in at just over 4 lbs, this bag features 4 Hole Micro synthetic insulation and a 210T soft microfiber lining to keep you warm and comfy through the night. The mummy shape surrounds the body, keeping heat close, with a hood that surrounds the head. Featuring a 230T diamond ripstop nylon shell, it holds up to abrasion as well as slides easily when packing up into a stuff sack.