Kelty Cosmic 20 Down Mummy Sleeping Bag — 550 Fill, Recycled Fabrics, PFAS-Free DWR (2024 Model)

Warmth, Comfort, and Responsible Craft

Meet the Kelty Cosmic 20 Down Mummy Sleeping Bag, a three-season staple designed for backpackers and campers who value warmth without bulk. In Regular size it weighs about 2 lb 6 oz and packs down small enough for mountaintop bivouacs or weekend treks, delivering dependable performance on the trail.

Designed for heat retention and everyday comfort

The trapezoidal baffle construction helps keep down in place, optimizing warmth across the torso and shoulders. An expanded natural-fit footbox gives your feet room to relax, while dual-direction zippers provide flexible venting and easy access without crawling out of your sleeping bag at the campsite.

• Heat-efficient trapezoid baffles help maintain even warmth throughout the night
• Natural-fit footbox supports feet and toes for a more comfortable sleep
• Dual-direction zippers enable flexible venting and quick entry/exit
• Zippered stash pocket keeps small items within reach at the campsite

Sustainable materials and responsible sourcing

Fabrics in the shell and lining are recycled, finished with PFAS-free DWR for water resistance. The 550-fill down is ethically sourced and traceable via RDS, reflecting Kelty’s commitment to transparency and sustainability on and off the trail.

• Recycled shell and lining fabrics with PFAS-free DWR
• 550-fill down with RDS traceability for responsible sourcing
• Planet-Earth approved materials and construction minimize environmental impact

Specs and real-world use

Designed in Sunny Colorado, this 2024 model blends warmth with portability for three-season adventures. The Regular length fits sleepers up to 6 ft, with an ISO limit rating of 21°F and an ISO extreme rating of −11°F. Packed size is approximately 13 × 7 inches, and the overall weight is around 2 lb 6 oz.