Rab / Mythic Ultra 120 Modular Down Sleeping Bag

Minimalist's best solution



Rab is a brand founded in 1981 by British climber Robert Carrington, and produces highly reliable, high-quality items for extreme cold environments and alpine climbing around the world. In particular, the company has a reputation for its advanced technology and attention to detail when it comes to down and synthetic fiber insulation systems, which are the company's roots.

Winner of the ISPO Award 2023, Mythic Ultra 120 Modular eliminates down on the back of the upper body that would crush the loft, and uses TILT lining and 900FP down for ultra-lightweight (330g) and high performance (Rab Sleep Limit 0°C) It is a sleeping bag. Ultrashpere 4.0, Ultrashpere 1.5 The ultimate lightweight sleep system designed to attach to an air mat and insulate the back, making it ideal for thru-hikes, multi-day mountain runs, and even minimalist car camping. Diagonal zip entry with YKK® 2- way zip allows for easy entry and exit and versatile ventilation, A perfect minimalist solution, including pillow sleeves designed to fold and set clothing.

Made from ultra-lightweight 10D ripstop nylon, the interior is coated with titanium using the world's first thermo-ionic lining technology called TILT (Thermo Ionic Lining Technology). Keeps the user's radiant heat inside the bag without compromising the breathability of the fabric. This reduces the amount of down required to achieve a certain level of warmth, creating an amazing balance between temperature range and warm-to-weight ratio. The down is a fluorine-free, water-repellent down developed in collaboration with NIKWAX, which has a 900+ fill power, and is enclosed in a trapezoidal box structure with no cold spots. We use traceable down that is ethically processed and RDS (Responsible Down Standard) certified.

It is also possible to stack the Mythic Ultra 120 Modular and Mythic G Down Jacket together to suit various temperature ranges. In addition, by setting the Hooded VB Liner , it is possible to prevent condensation inside the sleeping bag during the harsh winter months.


Pack size: approx. 30 x 16cm
Weight: 330g (down amount 120g)
Compatible temperature: Rab Sleep Limit 0°C ( 32°F) Air mat rating R4 or higher
Materials: Outer material: Atmos™ (27gsm) 10D recycled nylon fluorocarbon-free DWR durable water repellent / Lining: TILT (Thermo Ion Lining Technology) Atmos™10D recycled nylon (28gsm) / Filling: 900FP European goose down Nikwax fluorocarbon Free water repellent down (120g)
Attachments: Storage bag, lightweight dry compression bag
Country of origin: United Kingdom