Rab / Mythic Ultra 360 - Gray, Cloud Graphene

The World’s First Heat-Reflective Sleeping Bag



Rab was founded in 1981 by British climber Robert Carrington. Since then, the brand has been creating highly reliable, top-quality equipment designed for extreme cold conditions and alpine climbing around the world. With its roots in crafting premium down and synthetic insulation, Rab has built a reputation for advanced technical expertise and meticulous attention to detail.

The award-winning Mythic Ultra 360 is a pioneering product designed for ultra-distance mountain marathon runners and high-end alpinists who demand performance measured in grams. Developed from over 40 years of mountain experience, it stands among the most advanced ultralight sleeping bags available today.

The outer shell is made from ultralight 10D ripstop nylon, updated from the previous 7D version for improved durability. At its core is TILT (Thermo Ionic Lining Technology)—the world’s first heat-reflective fabric lining, created by coating the fibers with titanium. This unique technology reflects radiant heat back to the body, significantly enhancing warmth without compromising breathability, weight, or functionality. By retaining body heat without blocking air permeability, it reduces the amount of down required to achieve warmth, delivering an exceptional warmth-to-weight ratio. High-quality 900+ fill power hydrophobic down, developed in collaboration with Nikwax, is carefully enclosed in a trapezoidal box-wall construction to eliminate cold spots. The down is fluorocarbon-free, water-resistant, and RDS-certified to ensure complete ethical traceability.

When paired with the Rab / Mythic Ultra 180, the Mythic Ultra 360 can adapt to a wide range of conditions as part of a versatile, modular system.


Wanderout Journal
Rab / Mythic Ultra System


- Lightweight baffle construction prevents down migration
- Trapezoidal chambers for eliminating cold spots
- Differential cut for optimized thermal efficiency
- Bonded anti-snag zip guard
- Ergonomically designed internal collar and hood
- Angled foot box for natural posture and warmth
- ½-length YKK® 3-coil main zip with noctilucent puller
- Lightweight dry bag-style compression sack
- Cotton storage sack included
- Made in Derbyshire, UK
- Independently tested to European standard EN ISO 23537:2016


Circumference (shoulder girth): approx. 160 cm
Pack size: approx. 36 × 18 cm
Weight: 645g
Temperature ratings (EN/ISO): Comfort -2°C, Limit -8°C, Extreme -27°C
Material:
- Outer fabric: Atmos™ (27gsm) 10D recycled nylon with fluorocarbon-free DWR
- Lining: Atmos™ (28gsm) 10D recycled nylon with TILT (Thermo Ionic Lining Technology)
- Insulation: 900FP European goose down, Nikwax fluorocarbon-free hydrophobic treatment (120 g)
Accessories: 1 storage sack, 1 lightweight dry compression sack
Country of origin: United Kingdom



Product code 09965-43-395