Kelty Cosmic Sleeping Bag
Best reliable warmth for budget conscious cold weather campers.
This is the gold standard for backpackers who prioritize comfort over shaving every last gram. The trapezoidal baffle construction traps heat exceptionally well, and the roomy footbox finally lets you sleep without feeling restricted. You sacrifice a bit of packability for a much better night's rest.
$314.95
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Who it's for
- Backpackers prioritizing lightweight gear for frigid conditions.
- Value-seeking adventurers needing reliable cold-weather protection.
- Campers and backpackers encountering unpredictable or humid weather.
Who should skip it
- Ultralight backpackers requiring the absolute smallest packed size.
- Restless sleepers desiring ample space and comfort throughout the night.
- Experienced users seeking advanced comfort and convenience features.
Performance breakdown
Thermal Efficiency
Trapezoidal baffle construction effectively traps heat for reliable cold-weather performance.
Weight-to-Warmth Ratio
Solid insulation value, though the heavier fill adds bulk for backpacking.
Footbox Comfort
Natural-fit design provides generous space for restless sleepers to move.
Zipper Reliability
Anti-snag system and dual sliders make entry and ventilation seamless.
Weather Resistance
PFC-free DWR coating handles light moisture well in damp conditions.
Packability
Substantial fill weight results in a larger footprint inside your pack.
Key Specs
ISO Comfort Rating
17°F / -8°C
ISO Limit Rating
4°F / -16°C
ISO Extreme Rating
-34°F / -37°C
Fits to
6' 6" / 198 cm
Weight
4 lb. 13 oz. / 2.18 kg
Fill weight
41.55 oz. / 1178 g
Stuffed size
10" x 19" / 25 x 48 cm
Insulation
550FP Duck Down
Shell material
20D 400T Nylon
Lining material
50D 300T Polyester
Know before you buy
Still have a question?
Ask Metto anything about the Kelty Cosmic Sleeping Bag before you decide.