Mythic Ultra Down Jacket

501g (Medium)
Outer Fabric:
Pertex Quantum
Fill Weight:
Fill Power:
Down Treatment:
Baffle Type:

UOG TOP PICK - Rab Mythic Ultra Jacket - Chosen because of the use of key technologies to improve performance, high quality down, TILT reflective technology and offset baffles mean that this jacket gets the absolute maxi…

RRP: £419.99
| You save: £65.00 (15%)
20% VAT deducted at checkout for goods delivered outside of the UK
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Product Details

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UOG TOP PICK - Rab Mythic Ultra Jacket - Chosen because of the use of key technologies to improve performance, high quality down, TILT reflective technology and offset baffles mean that this jacket gets the absolute maximum available insulation out of the down within it.

Rab says: 

Extraordinary warmth for minimum weight, this Pertex® Quantum down jacket is a gamechanger for alpinists. Combining TILT tech with 900FP down and offset baffle construction, it’s our warmest lightweight down jacket yet, the product of extensive R&D.

Our Verdict

Rab's Mythic Ultra Down Jacket packs in a lot of technology, lets start with offset box wall baffles which ensure there are no cold spots from stitching through both outer and inner, most often found on heavier expedition weight jackets. Next Rab's TILT technology which reflects heat back to the body which would have otherwise been lost, and finally the sheer quality of the down, almost the best quality available at 900FP. What's not to like?

High quality construction with super lightweight fabric, hand pockets and a chest pocket, decent hood which is helmet compatible but not so big that it doesn't fit well when not wearing a helmet.

- Reviewed by Ultralight Outdoor Gear

In-depth Reviews:


  • Helmet compatible down-filled hood with rear elastication, concealed internal adjustment and stiffened peak for increased protection
  • Precurved and articulated sleeves for improved fit and movement
  • Lightweight YKK® VISLON® centre front zip with fleece lined chin guard
  • YKK® concealed zipped hand pockets and chest pocket
  • Lightweight part elasticated cuffs for optimum fit and reduced bulk
  • Lightweight dual sided rear hem adjustment with anti snag tether
  • Supplied with a lightweight stuff sack
  • Down-filled hood with part elasticated opening and stiffened peak
  • Outer: 100% Recycled Polyamide. Lining: 100% Recycled Polyamide
  • Fit: Regular


  • Small weighs: 476g
  • Medium weighs: 501g
  • Large weighs: 516g
  • XLarge weighs: 540g
  • Centre back length:(Size M): 76.5cm / 30.1inch

Material & Construction

  • 10D Recycled Pertex® Quantum nylon ripstop (28gsm) with fluorocarbon free DWR
  • Lining: 10D Recycled Pertex® Quantum nylon ripstop (28gsm)
  • Secondary Lining: Scrim: 100% polyester scrim with aluminium coating (15gsm)
  • Main Insulation: 900FP European Goose Down with Nikwax Fluorocarbon-Free Hydrophobic Finish (240g / 8.5oz, Size M)
  • Offset box wall baffles with TILT scrim on torso boosts core warmth
  • Stitch-through construction on arms and hood reduce weight and increase mobility

Help & advice:

Rab Mythic Ultra Down Jacket

Mythic Ultra Down Jacket

RRP: £419.99
| You save: £65.00 (15%)
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What is Thermo Ionic Lining Technology?

Outdoor gear that is designed to keep you warm, and does so by trapping air near to your skin, this air is warmed by heat radiating from your body creating a warm layer of air around you. The majority of the heat from your body is lost to the atmosphere, Rab has been looking at how to capture more of that energy without having a weight penalty on their sleeping bags.

Rab's new fabric, TILT (Thermo Ionic Lining Technology), is used in the inner lining of their top-of-the-line sleeping bags, sleeping mats and down jackets. This technology reflects heat back toward the body, reducing radiative heat loss and increasing warmth. It significantly improves the warmth-to-weight ratio without altering the fabric's original properties or adding weight. At Ultralight Outdoor Gear, we prioritize this balance - enhancing the insulating capabilities of gear without increasing its weight. Improvements like these earn our enthusiastic endorsement.


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