Mountain Hardwear Phantom GORE-TEX 0 Sleeping Bag

$830.00to $860.00
Color: Alpine Red
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Designed for low-temperature pursuits such as snow camping and mountaineering, the Mountain Hardwear Phantom GORE-TEX 0 sleeping bag provides an ultrawarm reprieve from frigid mountain conditions.


  • 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


Temperature ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth, since many different factors contribute to your comfort while you sleep. Backpacking bags are typically rated for temperature according to an independent testing protocol—currently International Organization for Standardization (ISO) 23537, though some older items followed European Norm (EN) 13537. Testing is based on a person wearing one base layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38.

Each bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
View all Mountain Hardwear Backpacking Sleeping Bags

Technical Specs

Best Use


Tested Lower Limit

0 degrees (F) - ISO

Tested Comfort

13 degrees (F) - ISO

Temperature Rating (F)

0 degrees (F)

Temperature Rating (C)

-18 degrees (C)


Regular - Left Zip: 3 lbs. 5 oz.

Long - Left Zip: 3 lbs. 7.4 oz.


30-denier ripstop nylon

Zipper Location


Insulation Type



Goose down

Fill Weight

Regular - Left Zip: 1 lb. 15 oz.

Long - Left Zip: 2 lbs. 1 oz.


20-denier nylon taffeta

Sleeping Bag Shape


Fits Up To (in.)

Regular - Left Zip: 72 inches

Long - Left Zip: 78 inches

Shoulder Girth (in.)

64 inches

Hip Girth (in.)

58 inches

Stuff Sack Size

17 x 9.5 inches

Stuff Sack Volume

Regular - Left Zip: 11.3 liters

Long - Left Zip: 12.1 liters

Compressed Volume

Regular - Left Zip: 11.3 liters

Long - Left Zip: 12.1 liters




Contains materials that meet the bluesign® criteria

Down certified to the Responsible Down Standard (RDS)

23 reviews with an average rating of 4.8 out of 5 stars

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