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When you curl up in the Kelty Cosmic Synthetic 0 sleeping bag, you'll think less about your weary feet and more about tomorrow's adventure. It's cozy, soft and light on weight (and your wallet).

  • Features

    • Buttery-soft and durable nylon shell has a PFC-free durable water repellent (DWR) finish that helps repel moisture to keep you warm and dry inside
    • Light, compressible CirroLoft synthetic insulation keeps the overall weight of the bag low without skimping on warmth
    • Natural-fit spacious footbox gives you more room to wiggle your toes
    • Handy stash pocket gives you a spot to keep your headlamp, cellphone or other small essentials close by
    • Included compression stuff sack helps you compact the bag so it takes up less space in your pack

    Imported.

    Many sleeping bags are rated for temperature by an independent testing protocol. REI and the broader industry now use the International Organization for Standardization (ISO) 23537 protocol, which improves on the older European Norm (EN) 13537 standard; you may still see older items in our assortment that were only EN tested. With either protocol, each bag gets a Comfort (or T-Comfort) rating and Lower Limit (or T-Limit) rating. The Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Ratings are based on a person wearing one long underwear layer and a hat, sleeping on an insulated surface with a minimum R-value of 5.38. Many brands use the Comfort rating for women's bags and the Lower Limit rating for men's and unisex bags. Everyone's body and sleep comfort differ, and conditions of use (posture, clothing, sleeping pad R-value, wind, humidity, etc.) affect total insulation, so EN and ISO ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth.
    View all Kelty Men's Sleeping Bags
  • Technical Specs

    Best Use

    Backpacking

    Tested Lower Limit

    5 degrees (F) - ISO

    Tested Comfort

    18 degrees (F) - ISO

    Temperature Rating (F)

    5 degrees (F)

    Temperature Rating (C)

    -15 degrees (C)

    Weight

    Long - Right Zip: 4 lbs. 11 oz.

    Regular - Right Zip: 4 lbs. 6 oz.

    Shell

    20-denier 380T nylon taffeta

    Zipper Location

    Right

    Insulation Type

    Synthetic

    Fill

    Cirroloft synthetic fibers

    Fill Weight

    Long - Right Zip: 3 lbs. 11.2 oz.

    Regular - Right Zip: 3 lbs. 6.4 oz.

    Lining

    50-denier 300T polyester taffeta

    Sleeping Bag Shape

    Mummy

    Fits Up To (in.)

    Long - Right Zip: 78 inches

    Regular - Right Zip: 72 inches

    Shoulder Girth (in.)

    Long - Right Zip: 64 inches

    Regular - Right Zip: 62 inches

    Hip Girth (in.)

    Long - Right Zip: 60 inches

    Regular - Right Zip: 58 inches

    Stuff Sack Size

    17 x 11 inches

    Stuff Sack Volume

    26.5 liters

    Gender

    Unisex

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