Rab Mythic Ultra 180 Down Sleeping Bag (0c)

The Mythic Ultra 180 redefines ultralight warmth. Using our ground-breaking heat reflective Thermo Ionic Lining Technology, this is premium protection for those counting every last gram.

Weight : 440g / 16oz
Rab Sleep Limit : 0°C / 32°F
Packed Size : 32 x 16cm / 12.6 x 6.3in


We recommend using this for:

  • Fast & Light Adventures
  • Mountaineering
  • Trekking

Designed and constructed by our in-house technicians on the back of 40 years of hard-won mountain expertise, the award-winning Mythic Ultra 180 is one of the world’s most advanced lightweight sleeping bags.

Though constructed with a lightweight recycled 10D outer and filled with high-loft 900FP down, the really special part is the inner lining. This incorporates world-first Thermo Ionic Lining Technology (TILT), which adds a titanium coating to the fibres to reflect heat back towards your body, enabling it to significantly boost warmth without increasing weight, compromising breathability, or sacrificing any features.

Weighing just 440g, the stripped back insulation of our TILT-equipped Mythic Ultra 180 is the ultimate expression of performance without penalty.

  • Weight:Reg: 440g/15.5oz. XL: 480g/16.9oz
  • Insulation:900FP European Goose Down with Nikwax Fluorocarbon-Free Hydrophobic Finish (180g/6.3oz)
  • Main Fabric:10D Recycled Atmos™ (27gsm) with Fluorocarbon-Free DWR
  • Fabric Lining:10D Recycled Atmos™ (28gsm) with Thermo Ionic Lining Technology (TILT)
  • EN (13537:2012) Temperature rating:ISO EN: Comfort: 7°C, Limit: 2°C, Extreme: -12°C
  • Rab Sleep Limit:0°C / 32°F
  • Packed Size:32cm x 16cm (12.6in x 6.3in)
  • Product Code:QSI-42
  • Weight saving baffle construction, preventing down shift/migration
  • Trapezoidal boxwall construction, to maximise loft and warmth
  • Proportionally designed differential cut
  • Anti snag bonded zip guard
  • Ergonomically designed internal collar and hood
  • Angled foot box for relaxed sleeping posture
  • 1/8 length YKK® 3 coil main zip with noctilucent puller
  • Lightweight dry bag compression stuff sack

Material facts

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Material Facts

Mythic Ultra 180 Down Sleeping Bag (0C)

Total Recycled Content*  54%
Fabric  99%
Outer 100%
Liner 99%
Hydrophobic Down 0%
Zips  37%
Trims  16%
Fluorocarbon Content 
Fabric  No
Outer No
Liner No
Hydrophobic Down No
Zips  Yes
Trims No
Manufactured in United Kingdom
*Calculations based upon the weight of a regular length sleeping bag.
QSI-42 Version 09/2023