KSB 0˚ Down Sleeping bag

100% of 100
With a 650 fill-power white duck down that delivers exceptional warmth for its weight the KSB 0˚ sleeping bag still packs small and its durable fabric will provide years of use. Its 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. 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. Highly durable fabrics are tough, light and comfortable. The expanded chest area and flexible baffles provide room to move, and a stash pocket keeps small items right at hand.

  • EN Comfort Rated at 14˚F / -10˚C
  • EN Lower Limit Rated at 1˚F / -17.2˚C
  • DWR coated
  • $299.95
    In stock


    More Information
    Weight3.7 lbs / 1.7 kg
    Temperature Rating0˚F / -17.8˚C
    Dimensions82” x 30” / 208.3 cm x 76.2 cm
    Pack Size14.75” x 8.5” / 38.1 cm x 21.6 cm
    Fill Power650 with fill weight of 1200g
    Insulation TypeWhite Duck Down
    Shoulder Girth60” / 152 cm
    Hip Girth60” / 152 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 0˚ 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.
    • EN Rated


    • 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
    Sort by ASC
    Can you buy 2 of them and zip them together?
    Question by: Louis-philippe on Nov 21, 2017, 2:57:00 AM
    I am interested in the KSB 0˚ DOWN SLEEPING BAG.
    I am 6"2' and I am wondering if that bag is a good fit?
    Question by: Guido Walter on Jan 9, 2018, 12:36:48 AM
    Write Your Own Review
    You're reviewing:KSB 0˚ Down Sleeping bag
    Your Rating