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Mountain Hardwear
Phantom Sleeping Bag: 15F Down

4.294117647058823 out of 5 stars
34 Reviews
Current price: $330.00 Original price: $550.00
40% off
Color:Alpine Red



Phantom Sleeping Bag

When your plans call for a bivy you need a sleeping bag that can withstand the elements while keeping you warm at the same time—the Phantom Sleeping Bag from Mountain Hardwear is the expedition companion for portaledge pushes and alpine starts. Made with ripstop materials and coated in a DWR finish, the Phantom won't be rubbed the wrong way in rocky outcroppings or left to wither in wet conditions. At only 2-pounds, it won't weigh down your pack either—an easy sell for adventures that require more gear than is comfortable to pack.

If you are exposed to the elements, the draft tube and collar keep unwanted cold air out while the large, anti-snag zipper won't keep you in. When middle-of-the-night duty calls, the reflective zipper will be easy to locate and the vertical baffles will maintain their fluffy warmth when you return.


  • Lightweight sleeping bag for epic expeditions in the alpine
  • 15-degree rating keeps you warm in shoulder season weather
  • Down draft collar keeps unwanted cold air out
  • Reflective, anti-snag zippers for easy alpine starts
  • Vertical chest baffles maintain heat where you need it
  • DWR finish protects against weather in exposed bivys
  • Updated footbox allows feet to rest naturally
  • Item #MHW01CX
10D nylon
90% goose down, 10% goose feather
two-way, YKK #5
Max User Height
[short] 5ft 6in, [regular] 6ft, [long] 6ft 6in
Shoulder Circumference
[regular] 58in, [long] 60in
Hip Circumference
[regular] 52in, [long] 55in
Foot Circumference
[long] 34in
Bag Length
[regular] 86in, [long] 92in
Draft Tube
Pad Retainer
two-way zipper
Fill Weight
1lb 4oz
Storage Sack
100% mesh
Stuff Sack
100% nylon
Stuff Size
7in x 15in
Claimed Weight
2lb 1.2oz
Manufacturer Warranty

Overall Rating

4.5 based on 34 ratings

Review Summary

1 Stars - 3 reviews
2 Stars - 2 reviews
3 Stars - 1 reviews
4 Stars - 4 reviews
5 Stars - 24 reviews

Fits Slightly Small

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?


Selecting an option will reload the available reviews on the page
3 out of 5 stars

June 28, 2024

Too narrow in Shoulders for me

I returned this product before using it
Size Bought:
One Size
5' 7"

I Understand that this is a performance bag, but for a few more ounces I would prefer to be more comfortable and not wake up with shoulder pain and numb arms. I think having an option for a wide and regular cut would be nice. That said, the quality and design of the bag in general is phenomenal, pretty much what I expect from Mountain hardware.

Ryan W
1 out of 5 stars

May 12, 2024

No estoy satisfecho con mi compra

Compré una bolsa de dormir Phantom 15 grados y en los 45 grados pase frío por 2 noches, así que pienso regresarla


Originally reviewed on

5 out of 5 stars

May 2, 2024

excellent, as advertised

Got the perfect shakedown of this bag in the low 20s recently and it performed exactly as advertised. It got a bit damp in the evening (don't ask) and I slept with damp ski boot liners and gloves, and was still warm all night. The dimensions seem accurate, which is to say a wee bit crowded sleeping with a bunch of gear, but it's not expedition cut, and this is what helps make it super light. Packs down super small with a quality included compression sack. Hits the mark for light, warm, and high quality.


Originally reviewed on

5 out of 5 stars

April 29, 2024


Have used it camping for the last 2 weeks straight. Temps have dipped to -7 Celcius and I’m still sweating in there at times. Rating is accurate - starts to get uncomfy at -10,but even then you’re fine with a warm layer or two to push it farther. If I had one complaint, I’d say leg room is tight -but for someone on the thinner side I’d imagine it’s perfect.


Originally reviewed on

5 out of 5 stars

March 2, 2024


Soft, light, and kept me warm. I used it so for for a 3 day back pack at Joshua tree and teps dipped into the 30's and I woke up sweating and had to unzip and take off some layers


Originally reviewed on

5 out of 5 stars

January 22, 2024

WOW!!! So light and so warm!

Been using this bag in some super cold temps for mountaineering (10-14k+). Was originally worried about getting a 15 bag but this thing is perfect. So light weight and keeps me warm in the bitter cold out here in Colorado.

Christopher B
5 out of 5 stars

September 18, 2023

Great Bag! Its light & warm

This is my 3rd Mountain Hardwear sleeping bag. I have a Ratio 15F/-9C I purchased about 6yrs ago which is still great. I purchased this bag so I could bring more than one kid with me on backpacking trips. I've used it 2x this season and its worked out great. We just did a couple nights up in Tahoe National Forest in the Island Lake area. Temps came down on the second night, but felt perfect in this bag. Some friends got cold, but this bag was great.

user image

Originally reviewed on

4 out of 5 stars

August 31, 2023

Nice! More spacious than I expected

Initial thoughts are great, though I haven't tested it anywhere near it's EN ratings yet (+10C was the coldest night). So many reviews told me it was tight and narrow - and perhaps that's true for the regular version - but as a 6'2" male at 165lbs, it felt quite spacious! If not a little too long. While I know there are taller people out there, I wish I didn't have so much excess material. I tried a regular out despite the max height of 6'0" and I probably could've gotten away with it but I knew I'd run into the same problem I already had: cold feet at night due to compressing the bag. This will no longer be an issue, especially with a foot box that's designed for feet much larger than my size 11s. I'd give it 4.5 stars if I could as a baseline. Once I get it out in the cold I might consider upping it to 5 stars if the warmth ratings hold up.

Erik S

Originally reviewed on

5 out of 5 stars

August 14, 2023

As comfortable as a sleeping bag gets

Warm with a lot of loft to the down. In alpine conditions I usually find myself sleeping with most of layers on still when I am in a bag but this one kept me warm through snowy nights and snug in storms without the need for any extra layers. It is very comfortable with nice cushioning in the hood and a very roomy foot box. My favorite bag I have ever used in cold mountain conditions.

user image
Stefan H

Originally reviewed on

5 out of 5 stars

August 8, 2023

Warm and snug

Keeps warm at night in multiple conditions and has a nice roomy footbox. If you're broad in the shoulders, you might find it slightly snug. Also, practice opening and closing the top portion before you go out and use it. Can be difficult to operate if you're not used to it.

Joe R

Originally reviewed on