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Mountain Hardwear
Phantom Sleeping Bag: 0F Down

4.378378378378378 out of 5 stars
37 Reviews

Out of Stock

Don't worry though, we have a lot more Down Sleeping Bags in stock than that.

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Why We Like The Phantom Sleeping Bag

At just over two-and-a-half pounds light, the Mountain Hardwear Phantom 0 Degree Down Sleeping Bag takes a burden off our back and puts some Z's into our sleep. This ultralight mummy sleeping bag packs down small, fits our body like a glove, and features a water-repellent finish that fends off heat-robbing moisture so it can retain its loft and warmth. Lightweight, packable, and thoughtfully made, the Phantom is a welcome addition to your overnight kit whether you're headed out for a ski tour the next morning or setting up a vertical camp on a multi-pitch expedition.


  • Ultralight sleeping bag that won't take up room in your overnight kit
  • Mummy shape cuts close to your body for maximum heat retention
  • Ghost nylon material is ultra-lightweight and highly compressible
  • 800-fill down provides high level of warmth in super-cold conditions
  • Four-chamber ergonomic hood design maintains even loft at the head
  • Generous draft collar seals heat at vital core areas
  • Ergonomic foot box delivers toasty comfort around your feet
  • Left- and right-hand zippered bags can be connected
  • Item #MHW01CW
[face fabric] 10D nylon Ghost ripstop, DWR finish, [lining] 20D nylon taffeta
850-fill goose down
performance mummy
full-length, left or right
Max User Height
[short] 5ft 6in, [regular] 6ft, [long] 6ft 6in
Shoulder Circumference
[short] 56in, [regular] 58in, [long] 60in
Hip Circumference
[short] 49in, [regular] 52in, [long] 55in
Foot Circumference
[regular] 41in
Bag Length
[short] 80in, [regular] 86in, [long] 92in
Draft Tube
yes, collar
Pad Retainer
Fill Weight
[short] 1lb 12oz, [regular] 1lb 14oz, [long] 2lb
European Norm/ISO Comfort Rating
Storage Sack
Stuff Sack
nylon compression
Stuff Size
8.25 x 16.5in
Claimed Weight
[regular] 2lb 9oz, [long] 2lb 12oz
backpacking, winter camping
Manufacturer Warranty

Overall Rating

4.5 based on 37 ratings

Review Summary

1 Stars - 2 reviews
2 Stars - 3 reviews
3 Stars - 1 reviews
4 Stars - 4 reviews
5 Stars - 27 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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5 out of 5 stars

January 2, 2024

Great 0 degree bag

Love this bag. Will keep you warm and cozy. Packs down pretty wek and at 5'10" and 165 (male) I found it to be roomy enough for me


Originally reviewed on

4 out of 5 stars

December 24, 2023

Works for the cold.

I am 5’8”and this bag fit me well. I like the room in the foot box. The nylon is super thin which cuts weight, so be careful not to tear. I used this bag 2 nights down to 8 and stayed warm.


Originally reviewed on

1 out of 5 stars

November 28, 2023

Poorly made

Seams started to come loose after 3 nights in bag.

Chris N.

Originally reviewed on

5 out of 5 stars

November 10, 2023

My first quality sleeping bag and it was an excellent choice.

I bought this bag for backcountry hunting in Colorado where temps were in the single digits at night. I could not be more pleased as it performed beyond my expectations. Super warm, lightweight, and packs down small.


Originally reviewed on

1 out of 5 stars

September 25, 2023

Bad news!

I purchased this Mountain Hardware sleeping bag several months ago in anticipation of my Mount Whitney trip. However, when I recently took it out of the closet to do inventory for the trip, I noticed that the ring for the drawstring on the hood is not securely attached. Unfortunately, this issue has forced me to cancel my trip. I'm disappointed and frustrated with the quality control of this product, as it was supposed to be a reliable companion for my outdoor adventures.

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Originally reviewed on

5 out of 5 stars

August 6, 2023


I bought this bag about 10 years ago to climb Rainier in the Spring. It was amazing then. It’s since been the ‘go to’ bag that all my kids fight over. Last night in heavy thunderstorms and rainfall in Wyoming this bag performed so well in a totally wet environment. To stay dry and warm i side while totally wet outside for HOURS is an amazing feat for a lightweight bag like this. So impressed!

user image
Wolf Jr.

Originally reviewed on

5 out of 5 stars

August 4, 2023

Amazing sleeping bag

Amazing sleeping bag and I love this product. It’s warm , packable, light . The zipper works great. I can’t say enough about this product.


Originally reviewed on

5 out of 5 stars

May 22, 2023

Sleeping naked

Just used it on a multi day backcountry trip, where temperatures dropped below zero Celsius multiple nights and I was very comfortable sleeping naked in it. Packs up pretty small and is super light.


Originally reviewed on

5 out of 5 stars

April 21, 2023

As described

What I was expecting. Is as described. Will update once I used.


Originally reviewed on

3 out of 5 stars

January 24, 2023

Great bag warmth, quality up for debate.

This sleeping bag on my first winter backcountry trip was fantastic. It kept me very warm and dry in sub freezing temps while I had wet items in the bag with me to dry out. Unfortunately when I got back from the trip, upon examining the bag I found the eyelet for the head cinch had broken and down was leaking out. Disappointing build quality for the price of the bag.

user image

Originally reviewed on