Remember the trapezoid from high school geometry? Turns out, this funky ol' shape is ideal for helping sleeping bags retain heat. Kelty trapezoidal baffle construction is just one of the reasons the Cosmic Down is still our favorite three-season superstar. Kelty 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. Specifications for Kelty Cosmic 20 Deg 550 Down Sleeping Bag: Manufacturer: Kelty Color: Dark Blue/Pageant Blue/Olive Oil Temperature Rating: 20 Fahrenheit Bag Shape: Semi-Rectangular Zipper Type: Right Lining Material: 50D 300T Polyester Insulation: 550 Fill Power DriDown Insulation Weight: 19 Gender: Unisex User Height: 5 ft 6 in (Women's Petite or Short);6 ft 0 in (Regular);6 ft 6 in (Long) Shoulder Girth: 58 in Foot Girth: 45 in Hip Girth: 58 in EN Lower Limit Rating: 21 F / -6 C EN Comfort Rating: 32 F / 0 C Packed Size: 8 x 13 in / 20 x 33 cm (Short) 8 x 14 in / 20 x 36 cm (Regular) 8 x 14 in / 20 x 36 cm (Long) Weight: 2.6 lb Age Group: Adults Application: Camping Fabric/Material: Recycled 20D Nylon Taffeta Length: 74 in Warmth Rating: 20 Water Resistance Level: Water Resistant Weight Range: 2 - 2.9 lb Operation Temperature Range: 21 to 30 Fahrenheit EN Rated: yes Features of Kelty Cosmic 20 Deg 550 Down Sleeping Bag 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 Package Contents: Kelty Cosmic 20 Deg 550 Down Sleeping Bag