Kelty
Cosmic 40
Best lightweight and warm sleeping bag for budget conscious backpackers.
Designed for three-season versatility, this sleeping bag strikes an ideal balance between warmth and weight. The semi-rectangular shape provides ample room for natural movement, while the expanded footbox ensures extra comfort for your feet. Engineered with high-quality down insulation and a full draft collar, it effectively traps heat to keep you cozy during chilly nights. The construction utilizes durable, fully recycled fabrics finished with a sustainable water-repellent treatment. Thoughtful details, such as an internal stash pocket for small essentials and an anti-snag zipper, make this a reliable, eco-conscious choice for backpackers and campers seeking performance in the outdoors.
$119.95
More Cosmic Options
Cosmic 20
$159.95
Cosmic Down 20
$189.95
Cosmic Synthetic 0 Degree
$139.95
Cosmic Synthetic 20
$109.95
Cosmic 20 Degree Sleeping Bag
$159.95
Cosmic Ultra 20 Degree
$269.95
Cosmic
$314.95
Cosmic 20 Sleeping Bag (Long)
$109.95
Cosmic Synthetic 20 Degree
$119.95
Cosmic 20 Sleeping Bag
$118.22
Cosmic Ultra 0°F Sleeping Bag
$219.95
Cosmic Ultra 800 DriDown Sleeping Bag
$184.48
Cosmic 0 Synthetic Sleeping Bag
$129.95
Cosmic 20 Sleeping Bag
$118.22
Cosmic Ultra 0°F
$245.97
Kelty Cosmic 20
$169.99
Kelty Cosmic Synthetic 0 Degree Sleeping Bag
$166.00
Kelty Cosmic Down 20
$189.95
Kelty Cosmic Ultra 0
$369.95
Cosmic Synthetic 40 Degree
$99.95
Cosmic Synthetic 20
$109.95
Owner Satisfaction
4.5
/ 5
Category Rank
1010
/ 2020
#1010 in Sleeping Bags
Price vs Category Average
-28%
Below average
Temperature Rating
40
/ °F
Who it's for
- Budget-conscious campers seeking lightweight warmth without breaking the bank.
- Backpackers and hikers prioritizing minimal bulk and weight in their gear.
- Campers desiring a cozy and hassle-free sleeping experience outdoors.
Who should skip it
- Adventurers planning trips in temperatures below moderate spring and summer nights.
- Campers in humid climates or those frequently exposed to rain and dew.
- Ultralight enthusiasts demanding the absolute smallest packed size and lowest weight.
Key Specs
Temperature Rating
40°F
Sleeping Bag Shape
Semi-Rectangular
Insulation Type
Down
Fill Power
550 cubic inches per ounce
Weight
1.63 lbs
Shell Material
Recycled Nylon
Lining Material
Recycled Polyester
Zipper Location
Left
Still have a question?
Ask Hayley anything about this product before you decide.