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Mountain Hardwear
Phantom Alpine Down Jacket - Men's

3.25 out of 5 stars
4 Reviews
Current price: $259.99 Original price: $399.99
35% off


Size Chart


Why We Like The Mountain Hardwear Phantom Alpine Down Jacket

The Phantom Alpine Down Jacket is Mountain Hardwear's warmest insulated jacket for mountaineering and backpacking. 800-fill down holds in our body heat and packs down small, thanks to its premium loft, while the Pertex Quantum Diamond Fuse shell provides a lightweight but abrasion-resistant barrier against rips, tears, and snags. The Phantom Alpine jacket stuffs easily into its own pocket with an internal carabiner clip loop for convenient carrying outside our pack or harness.


  • Puffy jacket for cold weather climbing and backpacking
  • Best for mountaineering and alpine climbing
  • Nylon ripstop shell is light yet abrasion-resistant
  • 800-fill down offers exceptional warmth for the weight
  • Synthetic fill next to cuffs to prevent wetting out
  • Internal drop pocket to keep items warm
  • Two-way zipper accommodates harness or hip belt
  • Down certified for meeting animal welfare requirements
  • Item #MHWZ9XS
Responsible Collection
Responsibly Sourced
Pertex Quantum Diamond Fuse 20D 100% nylon ripstop, DWR treatment
800-fill RDS-certified down
hip, cinchable hem
Center Back Length
2 oversized zippered hand (one packable), [internal] 1 zippered, 1 drop-in
two-way front zipper
Claimed Weight
1lb 0.1oz
climbing, hiking, casual
Manufacturer Warranty
limited lifetime

Overall Rating

3.5 based on 4 ratings

Review Summary

1 Stars - 1 reviews
2 Stars - 1 reviews
3 Stars - 0 reviews
4 Stars - 0 reviews
5 Stars - 2 reviews

What do you think about this product?


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5 out of 5 stars

June 8, 2024


super warm, super light, super packable. Great features and pocket placement. Works great as a light belay jacket. Slightly oversized so you can layer under it. 2way zipper helps with harness access.


Originally reviewed on

2 out of 5 stars

January 8, 2024

Sizing/Fit Again Is Wrong

Quality is excellent but MHW continually screws around with the sizing. Last year's Phantom jkt in slate blue color fits perfectly in Large but this year's model I bought in Orange (same size) is way too tight in the underarms. Why why why does MHS continue messing with the sizes??? It's so frustrating to have to return at my cost always for their mistakes.


Originally reviewed on

5 out of 5 stars

December 24, 2023

Awesome jacket with style and function!!

Great jacket. Fits as described. Very warm and lightweight. The elastic cuffs are comfortable and great when wearing gloves.


Originally reviewed on

1 out of 5 stars

December 18, 2023

2-way zipper kills a great jacket

I love this jacket -- excellent loft/insulation, light weight, very compressible for packing, decent wind resistance for a puffer. But the small toothed 2-way zipper takes 3-4 attempts every time you put on the jacket. Might be worth the trouble on a long, heavyweight parka, but completely out of place on a waist-length jacket. Kills me to return this jacket over something as simple as a zipper, but there's no way I'm subjecting myself to struggling to zip my coat in cold and/or dark conditions.


Originally reviewed on