Slash weight from your kit list with this award-winning ultralight modular bag, designed for thru-hiking, bikepacking, and mountain running.

Designed as the perfect complement to the new Ultrasphere 4.5 sleep mat, yet versatile enough to be used with other inflatable mats, the award-winning Mythic Ultra 120 Modular cuts weight and bulk by only including insulation where it’s not already provided by your mat. The upper bag, and underside of the legs, is filled with ultra-high-lofting 900FP down and heat-reflective TILT, reducing radiant heat loss without a gram of unnecessary weight. Meanwhile, the lower bag hooks around the mat which insulates you from the ground.

The result is an ultralight bag that, when combined with the Ultrasphere 4.5, forms a sleep system that weighs under 700g yet allows you to sleep comfortably down to 0°C.With a tiny pack size and uncompromised comfort, it’s the perfect sleeping bag for long-distance trekking, bikepacking, and multi-day mountain runs.

The lightweight stitch-through construction is low-bulk, with the down strategically positioned to optimise warmth. Secure the bag onto your sleep mat using the back harness, while the insulated side baffles marry up to the side of the mat to keep cold spots at bay. We’ve chosen a diagonal zip to allow easy entry and exit, as well as plenty of ventilation on warmer summer nights. Stash clothing in the hood sleeve to create an ultralight pillow, further streamlining your kit list.

The Mythic Ultra 120 Modular is hand-filled in the UK to ensure that its down has never been compressed before use, retaining its loft for your first epic adventure.

-Weight:330g/11.6oz
-Insulation:900FP European Goose Down with Nikwax Fluorocarbon-Free Hydrophobic Finish (120g/4.2oz)
-Main Fabric:10D Recycled Atmos™ (27gsm) with Fluorocarbon-Free DWR
-Fabric Lining:10D Recycled Atmos™ (28gsm) with Thermo Ionic Lining Technology (TILT)
-Rab Sleep Limit:0°C / 32°F with air mats rating R4 or above
-Packed Size:32cm x 16cm (12.6in x 6.3in)
-Product Code:QSI-40
-TILT and 900FP down on upper bag and lower legs achieves high warmth to weight ratio
-Integrated mat sleeve secures uninsulated area of the bag to air mat
-Rab sleep limit of 0°C (32°F) achieved with air mats rating R4 or above
-Diagonal zip entry with YKK® 2-way zip allows easy entry and exit, and versatile venting
-Pillow sleeve designed for folded clothing for use as a ultralight pillow
-Down-filled anti-snag zip baffle
-Lightweight roll-top compression sack included
Filled in Derbyshire UK
-Optimally filled, lightweight stitch-through construction

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