Men's Disco 15 Down Sleeping Bag - LongSeventy percent of people sleep on their side, yet mummy bags are not designed to accommodate this. Updated with new contours, Disco continues to reign as the ideal down backpacking bag for side sleepers, offering the plushest comfort possible on the trail. The classic Spoon shape provides a generous cut at the elbows and knees so side sleepers can shift positions comfortably throughout the night, while still packing remarkably small. Premium 650FP