Nanga Minimarhythm 5Below Sleeping Bag - Light GreyNanga built their reputation on developing sleeping bags designed to perform in some of the most extreme climates on Earth. For those that take their camping to headier heights, the Minimarhythm 5Below is a sleeping bag designed for mountaineering heads, and part of Nangas lightest Minimalism Series. Keeping weight at a premium, just 415g total in unison with a highly packable 770FP duck down which has a hydrophobic treatment to maintain performance