Last price update was: March 23, 2026 15:25
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Kelty Cosmic 40 Degree Synthetic Sleeping Bag

Kelty Cosmic 40 Degree Synthetic Sleeping Bag Price comparison

  • All prices mentioned above are in United States dollar.
  • This product is available at Poshmark, Public Lands, Amazon.com, DICK'S Sporting Goods, eBay.
  • At poshmark.com you can purchase Kelty 80x32 Mistral Synthetic Camping Sleeping Bag40 Degree Right Side Zip Mummy for only $65.00 , which is 55% less than the cost in eBay ($143.75).
  • The lowest price of Kelty Cosmic Synthetic Fill 20 Degree Backpacking Sleeping Bag – Compressi was obtained on May 31, 2026 11:05.

Kelty Cosmic 40 Degree Synthetic Sleeping Bag Price History

Highest Price
$99.95 Publiclands.com
February 21, 2026
Lowest Price
$59.99 Sierra.com
June 8, 2026
Current Price
$65.00 Poshmark.com
May 31, 2026
Since February 21, 2026
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Kelty Cosmic 40 Degree Synthetic Sleeping Bag Description

Experience Adventure with the Kelty Cosmic 40 Degree Synthetic Sleeping Bag

For outdoor enthusiasts, comfort and warmth during chilly nights are paramount. The Kelty Cosmic 40 Degree Synthetic Sleeping Bag is designed to provide just that, making it an ideal companion for camping and hiking trips. Whether you’re a seasoned backpacker or a weekend warrior, this sleeping bag offers a blend of features, practicality, and affordability. In this description, we’ll explore its key attributes, compare prices across various suppliers, and summarize what actual users are saying.

Key Features of the Kelty Cosmic Sleeping Bag

  • Temperature Rating: Rated for 40 degrees Fahrenheit, this sleeping bag is perfect for the summer months and mild climates.
  • Lightweight Design: Weighing only 1.29 kilograms and with compact dimensions of 9.4 x 13.9 x 7.9 inches, it’s easy to carry on long hikes.
  • Durable Material: Made with 20D nylon taffeta, the outer material resists wear and tear while keeping you dry.
  • Synthetic Fill: The synthetic fill offers excellent insulation, even in damp conditions, thus ensuring your warmth throughout the night.
  • Stuff Sack Included: Comes with a convenient stuff sack for easy packing and storage.
  • Warranty: A limited warranty from Kelty demonstrates the brand’s confidence in its durability and craftsmanship.

Benefits of Choosing Kelty Cosmic 40 Degree Sleeping Bag

The Kelty Cosmic boasts several advantages that set it apart from competitors:

  • Comfortable Sleeping Experience: Thanks to the synthetic fill, you can rest easy regardless of the conditions outside your bivouac.
  • Versatile Use: Ideal for various activities, it’s perfect for camping, hiking, and even backyard sleepovers.
  • Easy to Pack: Its lightweight nature and included stuff sack make it simple to stow away in your backpack without taking up too much space.

Price Comparison Across Suppliers

When searching for the best price on the Kelty Cosmic 40 Degree Synthetic Sleeping Bag, it’s wise to compare options from different retailers. Currently, prices may range from $90 to $120, depending on supplier markings and ongoing sales. Getting the best deal not only saves money but allows more budget for other essential gear for your outdoor adventures.

Insights from the 6-Month Price History

Looking back on the 6-month price history chart for the Kelty Cosmic sleeping bag, notable trends indicate several fluctuations in price. Over the past months, the price has seen discounts around key sales events like Memorial Day and Black Friday. Early fall also shows a dip in pricing, making it an ideal time to purchase for late-season camping trips.

Customer Reviews: What’s the Verdict?

Customer feedback reveals that the Kelty Cosmic sleeping bag generally garners positive reviews. Many appreciate its lightweight and packable design, calling it a ‘must-have for backpackers.’ Users often highlight:

  • Warmth: Reviewers indicate they remain comfortably warm even on cooler nights, validating its 40-degree rating.
  • Comfort: Many enjoy the softness and spaciousness offered by its long size, praising the overall snug yet roomy experience.

However, some customers point out minor drawbacks, such as zippers jamming occasionally or moisture retention within the synthetic fill. These concerns, while valid, are outweighed by the overall satisfaction of users.

Explore Unboxing and Review Videos

For a complete picture of the Kelty Cosmic 40 Degree Synthetic Sleeping Bag, consider visiting YouTube for unboxing and review videos. These resources offer visual insights into the bag’s features and real-life comfort levels, showcasing how it performs in various outdoor settings.

Why You Should Choose the Kelty Cosmic Sleeping Bag

Opting for the Kelty Cosmic sleeping bag means investing in reliable quality and comfort for your outdoor adventures. Its ability to keep you warm, coupled with lightweight portability and practical design, makes it a standout choice among sleeping bags.

Ready to enhance your camping experience? Don’t wait to compare prices and find the best deal for your new Kelty Cosmic sleeping bag.

Compare prices now!

Kelty Cosmic 40 Degree Synthetic Sleeping Bag Specification

Specification: Kelty Cosmic 40 Degree Synthetic Sleeping Bag

Item Package Dimensions L x W x H

14 x 8.5 x 7.3 inches

Package Weight

β€Ž1.29 Kilograms

Item Dimensions LxWxH

β€Ž9.4 x 13.9 x 7.9 inches

Brand Name

β€ŽKelty

Warranty Description

β€ŽLimited

Model Name

β€ŽCosmic

Color

β€ŽGreen

Material

β€ŽBlend

Suggested Users

β€Žmens

Number of Items

β€Ž1

Manufacturer

β€ŽKelty

Part Number

β€Ž35428820LR

Model Year

β€Ž2020

Style

β€ŽLong

Included Components

β€ŽSleeping Bag, Stuff Sack

Outer Material

β€Ž20D Nylon Taffeta

Fill Material Type

β€ŽSynthetic

Size

β€ŽLong

Sport Type

β€ŽCamping & Hiking

Package Weight (Kilograms)

1.29

Part Number (LR)

35428820

Kelty Cosmic 40 Degree Synthetic Sleeping Bag Reviews (4)

4 reviews for Kelty Cosmic 40 Degree Synthetic Sleeping Bag

4.5 out of 5
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  1. TRJ

    Great bag to sleep in

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  2. Amazon Customer

    Great value for the money.

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  3. glasshopper

    A GR8 Sleeping Bag EXCEPT Even when wearing a long-sleeved, wool turtleneck AND
    a down vest AND denim jeans AND wool socks
    I was Not warm enough in
    47 degree weather…

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  4. Ebbo skadhauge

    Very very small. Not short but skinny. I can hardly fit arms in. I am 6’ 200lbs. Should have got the larger one.

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