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Mike Hardaker Rocking the Rab Mythic Alpine Light Jacket in the Teton Backcountry | Photo Connor Burkesmith Mountain Weekly News
Outerwear

Rab Men’s Mythic Alpine Light Down Jacket Review

Mike Hardaker
December 21, 2023 4 Mins Read
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0 Comments

The Rab Mythic Alpine Light Down Jacket is a great layering piece or standalone insulated jacket that works well for ski touring, splitboarding and mountaineering.

Insulation

Contents hide
1 Insulation
2 Pertex Fabric
3 Who’s This Jacket For?
4 Weight
5 Rab Men’s Mythic Alpine Light Down Jacket Pros & Cons
6 Overall Impression
900F Insulations
For a Small Thing Jacket the Rab Mythic Alpine Down Packs a Ton of Warmth | Photo Connor Burkesmith Mountain Weekly News

Starting with the insulation, Rab teamed up with PrimaLoft to add a healthy dose of warmth to this packable jacket. A total of 900FP down combined with PrimaLoft® Gold and you get an extremely warm jacket for it’s size. Upon first look the Rab Mythic Alpine Down Jacket looks just like any other thin down jacket. But once you get your hands on it the real magic starts.

Pertex Fabric

Pertex Outerwear
If I could Have Pillows and Sheets With Pertex I would, Soo Comfortable | Photo Connor Burkesmith Mountain Weekly News

For durability the Rab Mythic Down Jacket is built around 100% recycled 10D outershell. More importantly the outer fabric is that of Pertex Quantum. Unless your familiar with UK outerwear brands and a select few European brands you might be wondering what all the fuss is about Pertex?

Man Putting on Ski Jacket
Your Ski or Snowboard Shell Easily Slides over the Pertex Material as shown by Author and Gear Tester Mike Hardaker | Photo Connor Burkesmith Mountain Weekly News

Pertex is silky soft and smooth to the touch. And when combined in a layering piece really allows an outershell to easily slide over whatever insulator you opt for. In our case it was the Rab Mythic Down Jacket which I used while hunting this fall, splitboarding and even a night our camping thanks to the small packable size.

Who’s This Jacket For?

Mike Hardaker Getting Ready to Dig Avalanche Pit
Mike Hardaker Getting Ready to Dig a Pit While Wearing the Rab Mythic Alpine Down Jacket | Photo Connor Burkesmith Mountain Weekly News

One word – athletes. Rab has always made slim fitting athletic gear that works well for those in good shape. If your packing a few extra lbs. this might not be the best gear for you. But for the light and fast crowd, Rab and their athletic cuts really stand out. You get all the warmth you need without all the bulk that traditional insulators feature.

Plus the articulated sleeves are meant for moving, so anyone planning to dig a pit and needing to warm up or do other snow safety stuff will really enjoy this warmth to bulk ratio.

Weight

Man Tossing on Insulated Jacket
Mike Hardaker Literally Tossing on the Rab Insulated Layer | Photo Connor Burkesmith Mountain Weekly News

The size medium I tested weights literally nothing coming in at 8.8oz which when tossed inside your backpack is 100% unnoticeable until you need the added warmth. For touring the jacket is pretty warm and doesnt offer a ton of breathability but that’s not what this is for. The Rab Mythic Jacket works best for wearing when you get to the top or bottom of the run and plan to chill for a bit, need a little added warmth that’s quick and easy to get on.

Rab Men’s Mythic Alpine Light Down Jacket Pros & Cons

Pros:

  • Extremely warm for its size
  • Pertex Quantum fabric for layering ease
  • Lightweight and packable for outdoor activities

Cons:

  • Fits snugly for athletic builds
  • Minimal breathability for active pursuits

Overall Impression

Rab Pertex Insulated Jacket
The Rab Mythic Alpine Light Down Jacket Checks Lots of Boxes, Light Weight, Packable, Warm and Durable | Photo Connor Burkesmith Mountain Weekly News

If Rab was based in the United States vs UK you would hear a lot more about this brand. Or maybe you already are in the know. Either way, the Rab Men’s Mythic Alpine Light Down Jacket ($330.00) is a piece of outerwear that seems to follow me on all my outdoor adventures and will surely become one of your best pieces of gear too.

  • Amazon USAmazon US
    $330.00
    Buy Now
    Amazon.com Price: $330.00 (as of 10/25/2025 13:58 MDT) Details

    Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.

Last updated: 2025-10-25 13:58:41

Related Insulated Pieces We Tested in the Mountains

    1. Rab Electron Jacket
    2. Black Diamond Approach Down Jacket
    3. L.L. Bean Ultralight Down Jacket
Follow Me Written By

Mike Hardaker

A dedicated gear tester, Mike spends his summers evaluating e-bikes, hunting equipment, and backpacking gear, transitioning to winter sports gear reviews, including splitboards and snowboards and avalanche snow safety equipment during the colder SNOWY winter months.

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