OUR CLASSIC BEST-SELLER - THE PERFECT BALANCE OF LIGHTWEIGHT WARMTHRemember the trapezoid from 10th-grade geometry? Turns out, this funky ol’ shape is ideal for helping sleeping bag baffles retain heat. The trapezoidal baffle construction improves on our best-selling Cosmic 20 sleeping bag—and it’s just one of the reasons the Kelty Cosmic Down 20 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.FEATURES- Innovative trapezoidal baffle construction = thermal efficiency- Lightweight and warm 550 fill down- Environmental and health friendly C0 and PFC-free DWR fabrics- Zippered internal stash pocket for headlamp, cell phone or actual… stash- Buttery-soft and durable 20D Nylon shell fabric- Zipper draft tube with anti-snag zipper design makes it easy to get in and out- Dual slider for ventilation with locking zippers- Natural fit spacious footbox = more room to wiggle your toes- Comes with stuff sack for quick departuresSPECS- Fits to: 6' 0" / 183 cm- Weight: 2 lb. 7 oz. - Fill weight: 16.4 oz. / 464 g- Stuff Sack Size: 8" x 13" / 20 x 33 cm- Length: 78 in / 199 cm- Shoulder Circumference: 62 in / 158 cm- Hip Circumference: 58 in / 147 cm- Foot Circumference: 46 in / 117 cm Item Number: 4852-173 Item ID: 220861 Category: Cosmic Down 20 Degree Regular