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Mountain Hardwear Phantom Gore-Tex Sleeping Bag: -40F Down


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Phantom Gore-Tex Sleeping Bag

Designed for the nights adjacent to high-alpine summit bids and deep winter dawn patrols, the Mountain Hardwear  -40 Degree Down Phantom Gore-Tex Sleeping Bag defends you against brutal conditions. This bag features Gore WindStopper which seals out the coldest winds and resists moisture to protect the insulation. Mountain Hardwear filled the Phantom 850-fill goose down for effective, efficient insulation that comes in at a surprisingly low weight. Vertical sidewall baffles maximize loft and therefore warmth while the winter mummy cut efficiently adds space for cold-weather gear storage and extra layers. A centered, half-length zipper makes sitting up and getting in and out a breeze, while an ergonomic draft collar works with the face gasket to ensure heat won't escape at vulnerable points.
  • Intense sleeping bag for brutal winter conditions
  • Gore Windstopper is wind-proof and water-resistant
  • 850-fill goose down is an extremely effective insulator
  • Ergonomic draft collar comfortably seals in heat
  • Spacious mummy shape for extra layers and gear storage
  • Centered zipper minimizes heat loss
  • Rated to -40 degrees Fahrenheit
  • Item #MHW01CS

[membrane/laminate] Gore-Tex Windstopper (2-layer) [face fabric] 30D nylon ripstop, [lining] 20d nylon taffeta
850-fill down
Max User Height
[regular] 6ft, [long] 6ft 6in
Shoulder Circumference
Hip Circumference
Bag Length
[regular] 89in, [long] 95in
Draft Tube
Fill Weight
[regular] 2lb 14oz, [long] 3lb
Storage Sack
Stuff Sack
Stuff Size
8 x 15in
Claimed Weight
[regular] 4lb 10oz, [long] 4lb 10.9oz
Recommended Use
backpacking, mountaineering, winter camping
Manufacturer Warranty

Tech Specs

What do you think about this product?



The description says center zip, but the photos show a side zip. Which is it? Thanks!


I'm 183cm with a medium to slim build looking to use this for high altitude mountaineering. Would the regular size be sufficient as I may need to dry clothing and potentially my boots in the bag?


What is the length? I'm 6'6. Also what is the weight?

Hey Russell! The length of the regular size is 183cm and fits someone up to 6' tall. And then the long is 198cm and fits someone up to 6'6" tall. So I would recommend the long for you. The weight is 2 lb 1.2 oz / 941 g.