Seventy 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 hydrophobic, PFC-free, RDS Certified down ensures traceability throughout the supply chain. These 3-season backpacking bags are loaded with features, including Thermo Gills that help regulate temperature during the night, Blanket Fold that provides tucked-in comfort, and a waterproof/breathable footbox to withstand tent condensation. Left-sided zippers on Mens and right-sided zippers on Womens allow Disco to zip together for a double version of these favorite sleeping bags.