Introducing the Mythic Ultra 120 Modular Sleeping Bag, a revolutionary design that redefines lightweight and versatile performance for outdoor enthusiasts. Specifically crafted to complement the new Ultrasphere 4.5 sleep mat, this award-winning sleeping bag offers unmatched efficiency by providing insulation precisely where it’s needed, eliminating unnecessary bulk and weight. With ultra high loft 900FP down and advanced heat-reflective TILT technology in the upper bag and leg underside, it minimises radiant heat loss for exceptional warmth without compromise.

 

The lower section smartly hooks around your mat, utilising the mat’s insulation to keep you warm from the ground up. When paired with the Ultrasphere 4.5, the complete sleep system weighs under 700g yet delivers optimal comfort down to 0°C, making it the ultimate choice for thru-hiking, bikepacking, and multi-day mountain adventures.

 

Designed with practicality in mind, the bag features a low-bulk, stitch-through construction and strategically placed down for maximum warmth-to-weight efficiency. Side baffles align seamlessly with your mat to eliminate cold spots, while a secure back harness keeps the bag firmly in place. The diagonal YKK zip provides easy entry and exit while allowing adjustable ventilation for warmer nights. Plus, the hood sleeve doubles as an ultralight pillow when filled with clothing, streamlining your gear for minimal packing.

 

Hand-filled in the UK to ensure uncompromised loft and quality, the Mythic Ultra 120 Modular is compact, ultralight, and ready for your first epic adventure. Whether trekking, cycling, or running through the mountains, this bag is engineered to keep you warm, comfortable, and ready for the trail ahead.

Ideal use:

Hiking, Multi-day mountain runs, Trekking

Materials:

Main: 100% Recycled Polyamide

Lining: 100% Recycled Polyamide with Metal coating

Key features:

900FP European Goose Down with Nikwax Fluorocarbon-Free Hydrophobic Finish

Pillow sleeve designed for folded clothing for use as a ultralight pillow

Integrated mat sleeve secures uninsulated area of the bag to air mat

Diagonal zip entry with YKK 2-way zip allows easy entry and exit

Optimally filled, lightweight stitch-through construction

Lightweight roll-top compression sack included

Down-filled anti-snag zip baffle

Very low pack size

Lightweight

Tech specs:

Temperature rating: Rab Sleep Limit: -0°C

Dimensions (packed): 16 x 32cm

Weight: 330g