Get Schooled in the Geometry of ComfortThe Kelty Women's Cosmic Ultra 20 is the ultimate in a lightweight mummy. We've taken our top-selling Cosmic Bag and added a women's specific 800 fill DriDown version, with all the perks too. The new trapezoidal baffle construction improves is ideal for retaining heat-and it's just one of the reasons Cosmic is still our favorite three-season superstar. We also love the natural-fit foot box for happier feet, and a PFC-free water-repellent coating for a healthier environment.What makes it a women's bag? It's designed for and tested to women's specific ISO standards. Studies show that women "sleep colder than men." So, in addition to narrower shoulders, wider hips and a shorter torso, our women's bags have extra insulation in the upper body and footbox.FeaturesInnovative trapezoidal baffle construction = thermal efficiencyPremium lightweight 800 fill DriDownEnvironmental and health friendly C0 and PFC-free DWR fabricsZippered internal stash pocket for headlamp, cell phone or actual stashButtery-soft and durable 20D Nylon shell and linerZipper draft tube keeps warm air in while anti-snag zipper makes it easy to get in and outNatural fit spacious footbox = more room to wiggle your toesComes with stuff sack for quick departuresSpecificationsLongTemperature Rating: 20.0°F / -7.0°CISO Comfort Rating: 25.0°F / -4.0°CISO Limit Rating: 13.0°F / -10.0°CISO Extreme Rating: -21.0°F / -30.0°CBag Shape: MummyWeight: 2.95 lbs / 1.34 kgFill Weight: 24.69 oz / 700.0 gFits To: 67.72" / 172.0 cmLength: 74.02" / 188.0 cmShoulder Circumference: 57.87" / 147.0 cmHip Circumference: 57.87" / 147.0 cmFoot Circumference: 38.19" / 97.0 cmStuff Sack Size: 8 x 13 in / 20 x 33 cmMaterials:Liner: 20D 400T NylonShell: 20D 400T NylonFill: 800DP DridownSource: Imported Kelty Women's Cosmic Ultra 20 Deg 800 DriDown Sleeping Bag, Regular Size, Right-Hand