KSB 20˚ Oversized Down Sleeping bag

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The KSB 20˚ Oversized 650 fill-power down delivers exceptional warmth for its weight and is easily packed into it’s compression sack. A draft collar, over-stuffed foot box, insulated mummy hood, and flexible baffles at the body’s core all work together to minimize heat loss for greater thermal efficiency. Highly durable fabrics are tough, light and comfortable. The oversized expanded chest area and flexible baffles provide ample room to move, and a stash pocket keeps small items right at hand. Using the adjustable Length Locks™ the sleeping bag can reduce in length up to 15 inches, efficiently sizing down to fit a 5’ 3” person.

  • Temperature rating: 20˚ F / -6.7˚ C
  • DWR coated
  • $279.95
    In stock


    More Information
    Weight3.1 lbs / 1.4 kg
    Temperature Rating20˚F / -6.7˚C
    Dimensions82” x 40” / 208.3 cm x 101.6 cm
    Pack Size15.5” x 8” / 394 cm x 20.3 cm
    Fill Power650 with a Net Fill of 900g
    Insulation TypeWhite Duck Down
    Shoulder Girth80.5” / 203 cm
    Hip Girth70” / 178 cm
    Fabric20D Sil-Nylon
    Warranty2 Years


    • Draft Collar: To maintain thermal comfort throughout the night, an insulated tube wraps around your shoulders to prevent heat from escaping as you sleep.
    • Stash Pocket: A small pocket is integrated into the draft collar – perfect for stashing a headlamp, wallet, phone or midnight snacks.
    • Soft Fabric: The soft, hydrophobic, 20D nylon lining is silk-sheet comfortable and won’t absorb moisture.
    • Temp Rating: Tested and rated at 20˚ F for three season comfort.
    • Fill: Warm, lofty 650 fill-power white duck down is lofty, warm and breathable.
    • Half-Moon Foot Box: The three-dimensional foot box utilizes a half-moon shape to help retain warmth, provide added room for greater comfort, and to allow the use of one of our sleeping pads inside the bag.
    • Flex Baffles: Flexible baffles provide freedom of movement and keep the insulation close to your body for more efficient thermal performance and exceptional comfort.
    • Expanded Chest Area: Thoughtful patterning expands the girth at the chest for added comfort and the freedom to move throughout the night without impacting thermal performance.
    • Mummy Hood: Insulated and comfortable, the mummy wraps the head to maintain essential warmth.


    • Water Resistant: Outer fabric has a durable water repellant (DWR) treatment to protect the insulation from moisture that can impede thermal performance and add weight.
    • Durable Fabric: Light and tough 20D rip-stop nylon has a high strength-to-weight ratio to help resist tears without adding unnecessary ounces.
    • ¾” Full-Length Snag-Free Zipper with Guard: Burly, but not bulky, the 3/4“ full length zipper has two-way sliders so it can be unzipped from top or bottom for ventilation. A full length zipper guard helps seal out drafts.
    • Pack Size: Two stuff sacks included for compact transport and larger storage.


    • Lightweight Materials: The 20D rip-stop nylon is light and compressible.
    • 650 fill power white duck down fill provides exceptional warmth for its weight.
    Questions and Answers
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    What 4 season sleeping pad do you recommend for this bag?


    What models do you recommend go inside the bag?

    I'm 6'4 260 and definitely need a pad 30 wide.

    Question by: Big D on Sep 25, 2017, 3:59:43 AM
    What is the weight of this bag, and what is the compressed size/volume?
    Question by: Noel Nason on Aug 14, 2017, 1:23:23 AM
    I'm 6'2 and 230 lbs, and a side & back sleeper...will this be to snug of a bag to accommodate my sleeping conditions? I'd like some movement
    "Inside" the bag to move around...thanks!!
    Question by: Danny Waits on Mar 10, 2017, 8:40:49 PM
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