The Kelty Cosmic Down 20 Sleeping Bag is a lightweight three-season down sleeping bag built for campers and backpackers who want packable warmth without giving up everyday comfort. This Regular, right-hand version is rated to 20°F and fits sleepers up to 6 feet tall, with 550-fill down insulation and heat-retaining trapezoidal baffle construction.
The Cosmic Down 20 combines a recycled 20D nylon taffeta shell with a recycled 50D polyester taffeta liner and PFAS-free DWR treatment. An expanded natural-fit footbox gives your feet extra room, while a full-length draft tube, draft collar, dual locking zipper sliders, and anti-snag zipper treatment help you manage warmth and ventilation through changing conditions.
Features & Benefits
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Helps retain warmth efficiently: Trapezoidal baffle construction works with 550-fill down insulation to reduce heat loss.
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Comfortable three-season insulation: The 20°F / -7°C temperature rating makes the Cosmic Down 20 suitable for a wide range of camping conditions.
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More room for your feet: An expanded natural-fit footbox provides additional space to move and settle in comfortably.
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Helps block drafts: A full-length draft tube and draft collar help retain warmth around the zipper and upper body.
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Easy temperature control: Dual locking zipper sliders allow flexible venting, while anti-snag treatment helps make the zipper easier to operate.
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Keeps small essentials nearby: A zippered internal stash pocket provides a convenient spot for small gear or devices.
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Uses recycled shell and liner fabrics: The bag features recycled nylon and polyester fabrics with a PFAS-free DWR treatment.
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Ready to pack: A stuff sack is included for storage and transport.
Best For
- Three-season camping
- Backpacking trips
- Cool-weather tent camping
- Campers up to 6 feet tall
- Travelers looking for packable down insulation
At 2 pounds 7 ounces with a packed size of approximately 8 x 13 inches, the Regular Kelty Cosmic Down 20 combines down insulation, a roomy semi-rectangular shape, and backpack-friendly packability for nights at camp.
Find the Kelty Cosmic Down 20 Sleeping Bag at Red Beard's Outfitter in Mobile, Alabama. Whether you're preparing for a Gulf Coast camping trip, heading north for cooler weather, or building a lightweight backpacking sleep system, our team can help you choose the right camping gear for your trip.
Frequently Asked Questions
What size is the Kelty Cosmic Down 20 Regular?
The Regular version fits sleepers up to 6 feet tall. It measures approximately 78 inches long with a 62-inch shoulder circumference, 58-inch hip circumference, and 46-inch foot circumference.
What insulation does the Kelty Cosmic Down 20 use?
The Cosmic Down 20 uses 550-fill down insulation. The product law label identifies the body and hood filling as duck down, with polyester fiber batting used in the draft tube and footbox.
What temperature is the Kelty Cosmic Down 20 rated for?
The Cosmic Down 20 has a stated temperature rating of 20°F / -7°C. Actual sleeping comfort can vary depending on the sleeper, clothing, sleeping pad, weather, and other conditions.
