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Water-repellent down insulation and a sub-three-pound weight ... a one-two punch.

At just over two-and-a-half pounds light, the Mountain Hardwear Phantom 0 Degree Down Sleeping Bag takes a burden off your back and puts some Z's in your sleep. This sleeping bag packs down small, fits your body like a glove, and features water-repellent down insulation that fends off heat-robbing moisture so it can retain its loft and warmth. This ultralight mummy bag will become a welcome addition to your shoulder-season backpacking kit whether you're overnighting in the White Mountains or picking off summits in the La Sals.

  • Mummy shape is cut to feel snug and close to your body for maximum heat retention
  • Filament Weave nylon material makes this sleeping bag durable, packable, and ultralight
  • Q.Shield down insulation boasts a water-repellent treatment so it can resist moisture buildup that would otherwise inhibit lofting and warmth
  • 800-fill down provides the maximum level of warmth for super-cold condition
  • Six-chamber ergonomic hood design maintains even loft around your head for consistent warmth
  • Ergonomic draft collar seals heat inside the bag with internal drawcords and a soft two-piece design

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Mountain Hardwear Phantom Sleeping Bag: 0 Degree Down

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Here's what others have to say...

4 5


  • Familiarity: I gave it as a gift, but have feedback to share

Its a great light sleeping bag and warm

5 5

Best Bag Ever

  • Familiarity: I've used it once or twice and have initial impressions

I've used the Mountain Hardwear phantom sleeping bag line of products for years. I've only used the 0 degree version for a couple nights, but it was fantastic. It was super light, incredibly compressible, and very warm. The sleeping bag I've used for years is the 32 degree version. If the 0 degree version is as great as it is, I have one incredible bag.

5 5

Mice, winter camping & vomit...

  • Gender: Male

My bag has about a dozen patched up holes near the foot area from a pesky mouse going to town one night. Its been sinched down in its stuff sack and magically re-lofted hundreds of times, like I was opening it for the very first time - every time. Its been used in backcountry huts, snow shelters, tents, and the back of my car. After all of its expeditions grand (winter camping in the sawtooths) and not so grand (getting thrown up on b/c I had nothing else to sleep with one crazy new years eve...), to this day it is still my single most warm piece of gear that I could ever dream of owning. Because that stupid mouse did such a good job on it that one night (and its smelling a little ripe), its almost at the end of its line. It'll be a sad day indeed, but you can bet your buttons I'll be buying the exact same model as long as they continue to make it.

Mice, winter camping & vomit...
5 5


best bag so far and very light and compacts, havnt had any zipper problems like ive heard from others

4 5

Warm and light!

  • Familiarity: I've put it through the wringer

I use this bag during the spring season guiding in the Pacific Northwest and it did an impressive job of keeping me warm and dry, despite waking up one night in a single wall tent w/ 2 inches of standing water inside (the bag also dries quicker than most). The lightweight fabric withstands normal abuse well, but isn't the burliest of materials and spits feathers fairly regularly, though not a big issue. Overall, this bag is my go-to for cold-weather alpine climbing due to the lightness, warmth, comfort, and compressibility.

5 5

Great Winter Bag

  • Familiarity: I've put it through the wringer

I used this bag for everything from snow camping to back of the truck bivy'ing. Super warm, incredibly light and packable. It almost never leaves my truck or travel bag. Couldn't be happier with it.