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Western Mountaineering Bristlecone MF Sleeping Bag: -10F Down


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    • 6ft/Left Zip

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    Bristlecone MF Sleeping Bag

    Western Mountaineering's Bristlecone MF Sleeping Bag is a semi-rectangular bag built for subzero temperatures. Ideal for most winter endeavors, the Bristlecone's 850+ down insulation has the loftiest fill rating, resulting in the highest warmth to weight ratio available on the market. Unlike most water-resistant shells, Western Mountaineering's MicroLite XP fabric offers long-lasting weather protection. The MicroLite XP shell helps the down retain its lofty warmth in moisture-riddled environments.

    Western Mountaineering critically thought out the bag's design to the smallest details, making the Bristlecone a long-lasting and very versatile choice. A differential cut places more fabric at the lining to ensure maximum loft inside the bag, and continuous baffles allow you to shift the bag's down towards the top or bottom for more or less warmth. Hook-and-loop tabs let you pull the hood, draft tube, and draft collar farther or closer to you for customized coverage. Extra convenient features include dual zippers on the left or right side, a waterproof stuff sack, and a storage sack with a large volume that helps the bag retain its loft over time.

    • Sleeping bag built for winter camping and backpacking
    • Light, lofty 850+ fill down insulation has a -10F temperature rating
    • MicroLite XP is water-resistant and breathable
    • Adjustable hood, draft collar, and draft tubes secure coverage
    • Stuff and storage sacks included
    • Item #WES000P

    MicroLite XP (microfiber)
    850+ fill down
    dual, left/right
    Shoulder Circumference
    69 in
    Hip Circumference
    61 in
    Foot Circumference
    48 in
    Bag Length
    6 ft, 6 ft 6 in
    Draft Tube
    yes, insulated
    Fill Weight
    [6ft] 42 oz, [6ft 6in] 45 oz
    -10 F
    Storage Sack
    yes, large volume
    Stuff Sack
    yes, urethane coated waterproofing
    Stuff Size
    10 x 20 in
    Claimed Weight
    [6ft] 3 lb 15 oz, [6ft 6in] 4 lb 3 oz
    Recommended Use
    winter camping
    Manufacturer Warranty

    Tech Specs

    What do you think about this product?


    >Rating: 5

    Finally Found One

    My 25 yr. old Cabelas down bag left me chilly recently, so I decided to upgrade. My difficulty is that I'm a bigger fellow, i.e. 6'1", 240 with fairly large chest. I purchased a used Feathered Friends Peregrine based on their description that it was for larger persons. Well, their idea of 'larger' and mine are apparently different. That bag fit like a compression shirt! The search continued until I found Western Mountaineering. Purchased the Bristlecone and couldn't be happier. Finally a bag with plenty of room to turn and move. I've yet to try it in the woods, but have no reason to doubt it will perform. Thank you Western Mountaineering.