Western Mountaineering Bristlecone MF Sleeping Bag: -10F Down

• Product Details

  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
  • 2 zippers allow this bag to lie flat or attach to another Western Mountaineering mummy bag

  Material

  MicroLite XP (polyester microfiber)

  Insulation

  850+ fill down

  Shape

  semi-rectangular

  Zipper

  full-length, dual-design

  Max User Height

  6ft, 6ft 6in

  Shoulder Circumference

  69in

  Hip Circumference

  61in

  Foot Circumference

  48in

  Bag Length

  6ft, 6ft 6in

  Draft Tube

  insulated

  Pockets

  none

  Pad Retainer

  none

  Fill Weight

  [6ft] 2lb 10oz, [6ft 6in] 2lb 13oz

  Degree

  -10F

  Storage Sack

  large volume

  Stuff Sack

  urethane coated

  Stuff Size

  10 x 20in

  Claimed Weight

  [6ft] 3lb 15oz, [6ft 6in] 4lb 3oz

  Manufacturer Warranty

  lifetime

  Activity

  winter camping

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