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 Men’s and right-sided zippers on Women’s allow Disco™ to zip together for a double version of these favorite sleeping bags.WHAT'S INCLUDED Compression stuff sack Mesh storage bag Features Classic Spoon™ shape adds room at elbows and knees for versatile comfort. Premium 650FP hydrophobic, PFC-free, 100% RDS Certified down is traceable and ensures humane treatment throughout the supply chain. Waterproof/breathable footbox protects from tent condensation, keeping feet warm and dry. Blanket Fold™ external draft collar and a full-length draft tube provide tucked-in comfort and temperature regulation. Thermo Gills™ allow you to vent body heat without letting cold drafts in. Full-length double-slider #5 YKK zipper with zipper plow makes getting in and out of the bag a breeze. Integrated pillow pocket allows a jacket, extra clothes, or Fillo™ to be stuffed into the sleeve opening for secure, elevated support through the night. Opposite-sided zippers on Disco™ Men's and Women's models increase versatility by allowing them to be zipped together into a double sleeping bag. Specs & Sizing Capacity: 1 Minimum Weight: 3 lb , 1 oz / 1.4 kg Packed Size: 12.5 x 8.5 in dia / 32 x 22 cm dia Temp Rating: 15F / -9C ISO Comfort: 17F / -8C Fill Type: Down Fill Weight: 1 lb , 13 oz / 830 g Fits Up To: 5'6" / 168 cm Shoulder Girth: 62 in / 157 cm Hip Girth: 58 in / 147 cm Knee Girth: 60 in / 152 cm Compressed Volume: 9 Construction & Materials Shell Fabric: 30D Nylon Ripstop w/ DWR Footbox Fabric: 40D Nylon Ripstop OSMO™ w/ DWR Lining Fabric: 30D Nylon Taffeta w/ DWR Zipper Location: Right Stuff Sack: Compression stuff sack, Mesh storage bag Insulation: 650 FP Down