Kelty Cosmic Sleeping Bag
Best comfortable and reliable synthetic sleeping bag for budget conscious adventurers.
This is the ideal entry point for three-season backpacking, offering a reliable, low-maintenance alternative to down. While it lacks the extreme packability of premium natural insulation, the synthetic fill stays warm when damp and provides a spacious, comfortable fit that’s perfect for those who prioritize durability over shaving every possible ounce.
$99.95
at
Durango Outdoor Exchange
More Cosmic options
Who it's for
- Campers in humid climates or those prone to damp gear.
- Budget-conscious adventurers seeking reliable gear without breaking the bank.
- Recreational campers enjoying mild weather and car camping adventures.
Who should skip it
- Backpackers needing a versatile bag for three-season or colder conditions.
- Ultralight backpackers prioritizing minimal weight and pack volume.
- Long-term users expecting maximum durability and consistent warmth for years.
Performance breakdown
Moisture Resilience
Synthetic insulation maintains loft and warmth even in damp, humid conditions.
Weight-to-Warmth Ratio
Solid thermal efficiency, though heavier than premium down alternatives.
Footbox Comfort
Natural-fit design provides ample room for toes to move freely.
Packability
Synthetic fill requires more space in your pack than down counterparts.
Fabric Durability
Tough nylon shell stands up well to frequent trail use.
Temperature Versatility
Reliable three-season performance for mild to cool backpacking nights.
Key Specs
ISO Comfort Temp Rating
37°F / 3°C
ISO Limit Temp Rating
27°F / -3°C
Fits to
6 feet / 183 cm
Length
78 inches / 198 cm
Shoulder Width
31 inches / 78.5 cm
Fill Weight
26.5 oz / 0.75 kg
Total Weight
2.68 lbs / 1.22 kg
Stuffed Size
15 x 8.5 inches / 38 x 22 cm
Insulation
CirroLoft
Shell Material
380T Nylon Taffeta
Know before you buy
Still have a question?
Ask Metto anything about the Kelty Cosmic Sleeping Bag before you decide.