OUR CLASSIC BEST-SELLER - THE PERFECT BALANCE OF LIGHTWEIGHT WARMTH Remember the trapezoid from high school geometry? Turns out, this funky ol' shape is ideal for helping sleeping bags retain heat. Our trapezoidal baffle construction is just one of the reasons the Cosmic Down is still our favorite three-season superstar. We also love the expanded natural-fit footbox for happier feet, zippered stash pocket and fully recycled fabrics and PFAS-free DWR treatment. The Cosmic Down is the total package. Features Trapezoidal baffle construction provides enhanced thermal efficiency Lofty, lightweight and warm 550 Fill Down Buttery-soft and durable, fully-recycled shell and liner fabrics with PFAS-free DWR Zippered internal stash pocket keeps your favorite devices close at hand Full draft tube and collar retain heat and enhance comfort Quad-stitch anti-snag zipper makes getting in and out easy Dual locking sliders for venting versatility Expanded, natural fit footbox = more room to wiggle your toes Stuff sack included, for quick and easy departures Specifications All Sizes Temperature Rating: 20degF / -7degC Bag Shape: Semi-Rectangular Stuff Sack Size: 13" x 8" x 7" / 34 cm x 20 cm x 19 cm Regular Fits to: 5' 8" / 173 cm Weight: 3.3 lb. / 1.42 kg Fill weight: 29.6 oz. / 840 g Length: 74 in / 189 cm Shoulder Circumference: 58 in / 147 cm Hip Circumference: 58 in / 147 cm Foot Circumference: 45 in / 113 cm Materials Insulation:550 Fill Down Fabric Primary/Body: Recycled 20D Nylon Taffeta Fabric Secondary: Recycled 50D Polyester Taffeta | Kelty Women's Cosmic Down 20 Sleeping Bag, Size Regular