Solving a long-time problem for those who sleep on their sides, NEMO Equipment swapped out the restrictive mummy shape in favor of the accomodating Spoon shape in the Women's 15 Degree Down Jam 15 Sleeping Bag. This unique shape adds room at the elbows and knees to let you shift positions comfortably throughout the night without losing any heat to cold air pockets. Lofty 800-fill power down insulation wraps you in toasty warmth in temps as low as 15-degrees, while its fluorocarbon-free, water-resistant Nikwax Hydrophobic Down treatment helps retain heat even after becoming wet. The durable, DWR-coated ripstop shell proves tough against tears and adds protection from light precipitation, while the waterproof, breathable footbox helps keep you dry when you accidentally roll over into tent condensation. Thermo Gills chest zips help you vent excess heat without allowing any cold drafts sneak in, and the included storage sack and stuff sack make for easy packing when you need to move on to the next campsite.