Klymit 20F Synthetic Sleeping Bag

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Size: Regular
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Delivering 3-season comfort, the Klymit 20F full-synthetic sleeping bag employs pillowy synthetic fiber insulation that keeps you warm and comfortable all night long.

  • Features

    • Outer fabric has a durable water repellent (DWR) treatment to protect the insulation from moisture that can impede thermal performance and add weight
    • Stretch baffles keep warmth next to you, and allow you to sit up, stretch and freely cross your legs without unzipping your bag
    • Built-out footbox offers plenty of comfort where its needed most
    • Mummy hood with draft collar and drawcord reduces draft
    • Closeout


    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 pair of socks, 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 Klymit Men's Sleeping Bags
  • Technical Specs

    Best Use


    Tested Lower Limit


    Tested Comfort

    20 degrees (F) - ISO

    Temperature Rating (F)

    20 degrees (F)

    Temperature Rating (C)

    -6 degrees (C)


    3 lbs. 11.2 oz.



    Zipper Location


    Insulation Type



    Synthetic fibers

    Fill Weight

    2 lbs. 10.3 oz.



    Sleeping Bag Shape


    Fits Up To (in.)

    78 inches

    Shoulder Girth (in.)

    58 inches

    Hip Girth (in.)

    Unavailable inches

    Stuff Sack Size

    9.5 x 17.75 inches

    Stuff Sack Volume

    20.3 liters

    Compressed Volume




  • Reviews
    6 reviews with an average rating of 4.3 out of 5 stars

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