Mountain Hardwear Phantom GORE-TEX -40 Sleeping Bag

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A mission-critical piece designed for high-altitude expeditions and the most bone-chilling conditions on Earth, the Mountain Hardwear Phantom GORE-TEX -40 is the brand's most protective sleeping bag.

  • Features

    • 850-fill-power down certified to the Responsible Down Standard (RDS) provides optimal warmth-to-weight ratio and compressibility
    • GORE® WINDSTOPPER® shell fabric is 100% windproof and blocks external moisture from getting into the bag, while allowing moist air inside the bag to escape
    • Oversize zipper draft tube prevents cold spots along the zipper
    • Tuck stitching protects baffle stitches from abrasion, adding to the bag's longterm durability
    • Expedition mummy cut efficiently adds extra girth to allow for layering in the coldest conditions, plus an extra 6 in. of length for gear storage in freezing temps
    • Regular size has an internal length of 87 in.; Long size has an internal length of 93 in.
    • Lightweight and durable #5 antisnag zipper offers easy entry and exit
    • 3D anatomically contoured footbox follows natural foot position for maximum warmth and comfort
    • Shaped, down-filled draft collar blocks the escape of warm air from inside the bag
    • Nylon compression sack and mesh storage sack included
    • Face gasket with cinch comfortably block drafts at hood opening
    • Vertical sidewall baffles add warmth and maximum loft
    • Glow-in-the-dark, reflective zipper pull is easy to find at night


    View all Mountain Hardwear Men's Sleeping Bags
  • Technical Specs

    Best Use


    Temperature Rating (F)

    -40 degrees (F)

    Temperature Rating (C)

    -40 degrees (C)


    30-denier ripstop nylon

    Zipper Location


    Insulation Type



    Goose down


    20-denier nylon taffeta

    Sleeping Bag Shape


    Shoulder Girth (in.)

    66 inches

    Hip Girth (in.)

    62 inches

    Stuff Sack Size

    20 x 11 inches




    Contains materials that meet the bluesign® criteria

    Down certified to the Responsible Down Standard (RDS)

  • Reviews
    23 reviews with an average rating of 4.6 out of 5 stars

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