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Coleman Kompact 30°F Rectangle vs Kelty Cosmic Down 20

Editorial Team
Last modified at August 9, 2026
When it comes to budget sleeping bags, the Coleman Kompact 30°F Rectangle and the Kelty Cosmic Down 20 are two popular choices. Both offer unique features that cater to different needs and preferences. This comparison will help you understand which sleeping bag is the best fit for your outdoor adventures.

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Coleman Kompact 30°F RectangleKelty Cosmic Down 20
Kompact 30°F Rectangle
Cosmic Down 20
Fill Type

Coletherm Max synthetic

550-fill down

Weight

Not specified

Regular: 39 oz

Size

75 × 33 in

Regular: 78 in long

Shell Material

Polyester

Recycled 20D nylon taffeta

Compression Sack

Included; 9.4 × 9 × 15.7 in packed

Included; Regular: 8 × 13 in

Warranty

5-year limited

Limited lifetime

Lining Material

Polyester

Recycled 50D polyester taffeta

Baffle Construction

Not specified

Trapezoidal baffles

Color

Spider

Not specified

Draft Tubes

Thermolock zipper draft tube

Full draft tube and collar

Fill Power

Not applicable - synthetic fill

550 fill

Foot Box

Rectangular

Natural-fit footbox

Comfort

Kompact 30°F Rectangle

4.6/ 5.0

Cosmic Down 20

4.2/ 5.0

Comfort is crucial for a good night's sleep, especially when you're out in the wilderness. A comfortable sleeping bag can make the difference between waking up refreshed or feeling restless. The Coleman Kompact 30°F Rectangle is praised for its soft and cozy inner lining, pleasant sleeping experience, and adequate cushioning. Users find it comfortable and reliable, making it a great choice for those who prioritize a cushiony feel. The Kelty Cosmic Down 20, while also comfortable, doesn't have as many mentions of specific comfort features. Therefore, if comfort is your top priority, the Coleman Kompact 30°F Rectangle is the better choice.

Durability

Kompact 30°F Rectangle

3.9/ 5.0

Cosmic Down 20

4.4/ 5.0

Durability ensures your sleeping bag can withstand the rigors of outdoor use and last for many trips. The Kelty Cosmic Down 20 stands out with its high-quality materials and strong zippers, receiving consistent praise for its overall quality. This makes it a more reliable choice for long-term use. The Coleman Kompact 30°F Rectangle, while durable, doesn't have as many mentions of quality aspects. Thus, if you're looking for a sleeping bag that will last, the Kelty Cosmic Down 20 is the winner in this category.

Warmth

Kompact 30°F Rectangle

3.9/ 5.0

Cosmic Down 20

4.7/ 5.0

Warmth is essential for staying comfortable in cold outdoor conditions. The Kelty Cosmic Down 20 excels in this category, with users consistently praising its warmth and ability to keep them cozy in lower temperatures. It is noted for its superior heat retention and full draft tube and collar. The Coleman Kompact 30°F Rectangle, while warm, is not as highly rated for extreme cold conditions. Therefore, if you need a sleeping bag for colder environments, the Kelty Cosmic Down 20 is the better option.

Packability

Kompact 30°F Rectangle

3.4/ 5.0

Cosmic Down 20

4.1/ 5.0

Packability is important for those who need to save space in their backpacks. The Kelty Cosmic Down 20 is more compact and easier to pack, making it a better choice for backpackers who prioritize space-saving. The Coleman Kompact 30°F Rectangle, while it does pack smaller than traditional Coleman sleeping bags and includes a stuff sack, is not as compact as the Kelty. Thus, if packability is a key factor for you, the Kelty Cosmic Down 20 is the winner.

Ease Of Use

Kompact 30°F Rectangle

3.6/ 5.0

Cosmic Down 20

3.1/ 5.0

Ease of use can make your outdoor experience more enjoyable, with features that simplify setup and maintenance. The Coleman Kompact 30°F Rectangle is noted for its large and easy-to-grip zipper pull, zip flow design, and user-friendly features. These aspects make it easier to use and maintain. The Kelty Cosmic Down 20, while still functional, doesn't have as many mentions of ease-of-use features. Therefore, if you value convenience and ease of use, the Coleman Kompact 30°F Rectangle is the better choice.

Versatility

Kompact 30°F Rectangle

4.1/ 5.0

Cosmic Down 20

3.1/ 5.0

Versatility allows a sleeping bag to be used in a variety of conditions and activities. The Coleman Kompact 30°F Rectangle is praised for being suitable for both indoor and outdoor use, accommodating most adults comfortably, and being suitable for a wide range of activities. This makes it a great all-around choice. The Kelty Cosmic Down 20, while versatile, doesn't have as many mentions of specific versatility features. Thus, if you need a sleeping bag that can handle various conditions and activities, the Coleman Kompact 30°F Rectangle is the winner.

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Conclusion & Final Verdict:

In conclusion, the Coleman Kompact 30°F Rectangle is the better choice for those who prioritize comfort, ease of use, and versatility. It offers a cozy and reliable sleeping experience suitable for a wide range of activities and conditions. On the other hand, the Kelty Cosmic Down 20 excels in warmth, durability, and packability, making it ideal for colder environments and long-term use. Choose the Coleman for a comfortable, all-season sleeping bag, or the Kelty for superior warmth and durability in colder conditions.

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