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Mountain Hardwear
Phantom Alpine Sleeping Bag: 30F Down

4.666666666666667 out of 5 stars
6 Reviews
Current price: $336.00 Original price: $480.00
30% off
Color:Deep Yellow



Phantom Alpine Sleeping Bag

When your expedition calls for nights in a bivy or portaledge, the Phantom Alpine Sleeping Bag from Mountain Hardwear is your warm companion. Equipped with two-way zippers that run more than halfway down the bag, you'll easily be able sleep in your harness with the tie-in running between the zippers for safety and security. Not only can you sleep warm and tied-in, you can also boil water, rack-up, and get dressed without leaving your bag.

The contoured footbox also takes comfort to the next level with a shape to fit the natural position of your feet so they don't feel suffocated in the middle of the night. And beyond sleeping comfort, the minimal weight of this sleeping bag makes it a perfect fit for light-and-fast missions where weight, comfort, and packability are all important factors.


  • Alpine specific sleeping bag for bivouacs and expeditions
  • Two-way zipper allows you to stay clipped in while sleeping
  • Down-filled head gasket blocks drafts from entering
  • Toe box provides ample space for natural foot placement
  • Water-repellent finish protects on damp bivy's
  • Minimal weight to prevent a loaded-down pack
  • Item #MHW01CV
10D shell. 20D Pertex Y-Fuse in high-wear areas
850-fill goose
2-way half-length
Max User Height
[regular] 6ft, [long] 6ft 6in
Shoulder Circumference
[regular] 56.5in, [long] 58.5in
Hip Circumference
[regular] 51in, [long] 53in
Bag Length
[regular] 85in, [long] 91in
Draft Tube
face gasket
2-way zipper
Fill Weight
Storage Sack
Stuff Sack
Stuff Size
6in x 13in
Claimed Weight
1lb 7.9oz
Manufacturer Warranty

Overall Rating

4.5 based on 6 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 2 reviews
5 Stars - 4 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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4 out of 5 stars

May 3, 2024

Perfect for my need

Works great, definitely long enough. Love the color and the zippers. If you are like myself and are wider in the hips and not thin this sleeping bag is going to be very snug. That would be my opinions only downfall.

5 out of 5 stars

December 18, 2022

Great quality bag

I bought this sleeping back and the 15 degree bag. Both are extremely lightweight and high quality given the 850 down, so perfect for backpacking.


Originally reviewed on

5 out of 5 stars

April 18, 2021


I have only used the product a few times but I feel as though I have a good understanding of the bag itself. The bag is very warm and needs nothing else until about the 40s. I am a warm sleeper so I need more heat than the next person. So I’ll wear long underwear or something else and I’m very warm well below 30. I love that there are three zippers on both side which allows me to stay in my bag and move stuff around in my tent. Which was the main reason I went with this bag to be honest. It is incredibly light and very small when packed. Which makes me worry about it’s durability. I know mountain hard wears stuff is supposed to hold together well. But only time will tell. I have not had any bad experiences with it. Additionally if you have the Ghost Whisper jacket. The part that tightens around the hip is also in the face opening for the bag which makes it really easy to open and close.


Originally reviewed on

5 out of 5 stars

March 12, 2021

Super light and warm!

I've put it through the wringer
Size Bought:
6' 3"

I?ve been really impressed with this bag. The materials used are super light while still remaining durable. The combo of lightweight Pertex materials with 850 down allows it to be warm while extremely compact. This bag has been in my pack for alpine climbs and compresses smaller than some of my down belay jackets. It’s become my favorite bag for alpine climbing. I use the long version.

user image
Nikki P
5 out of 5 stars

August 20, 2020

Excellent Summer Alpine Bag

Used the 30 degree version for 5 nights on the Ptarmigan Traverse at the end of July and it was perfect. It takes a bit of practice and patience to figure out how to fully zip both zippers closed because the slim profile of the bag. However, the versatility the two zippers provide is game changing. This is a high quality product and the included compression sack is really appreciated.


Originally reviewed on

4 out of 5 stars

May 22, 2019

Small if wide

Just got back from the weekend in the bag. Most of my other bags have run long due to the need to store gear at the bottom. I went with a regular on this bag. The bag is incredibly light! Love the colors. The duel zipper function makes everything from chores to venting an easy task. Plenty of foot room. Packs smaller than an MSR Reactor 1.7 liter. My one complaint is that it is a narrow bag. For reference I am 5'11" and 190lbs. Due to a broader set of shoulders I do find the zippers tend to get caught on the material unless I manage to get one arm out before I start the unzipping process. So overall love the bag, but do be careful if you are a little larger than the average mountain athlete.


Originally reviewed on