The Rab Mythic -6C strikes an excellent balance of weight to insulation. The perfect warmth-to-weight ratio for most fast-and-light mountain missions. Designed for alpinists, thru-hikers, and bikepackers where every gram counts, this bag balances cutting-edge heat-reflective technology with premium 900FP down to provide a comfortable night's sleep in freezing conditions without the bulk.

At the heart of the Mythic -6C is 900FP European Goose Down, treated with a Grangers fluorocarbon-free hydrophobic finish. This ensures the down maintains its loft even in the damp environments often encountered during multi-day trips. To maximize this warmth, Rab has integrated TILT (Thermo Ionic Lining Technology). This heat-reflective film significantly reduces radiant heat loss without compromising breathability or adding stiffness. Combined with the innovative L.O.F.T 3D baffle construction, which utilizes offset sidewall baffles to eliminate cold spots and migration, the Mythic -6C offers consistent, wraparound warmth, perfect for side sleepers who often struggle with cold spots in traditional ultralight bags.

The outer shell is crafted from 10D Pertex Quantum ripstop, a fabric known for being incredibly lightweight yet durable enough to withstand the rigors of the trail. This fabric allows the down to loft fully, trapping the maximum amount of air. The bag features a tapered mummy shape and an anatomically shaped footbox to reduce internal volume, ensuring your body doesn't waste energy heating empty space. Small details make a big difference in the dark: the Mythic features an anti-snag zip guard on its 1/2 length YKK zip and internal cordlocks positioned for easy adjustment while lying down. Each bag is hand-filled in Derbyshire, UK, ensuring the highest quality control for your most critical piece of sleep gear.

Rab Mythic -6C / 20F Features

• 10D Pertex Quantum outer
• TILT lining helps to reflect and reduce heat loss
• 900FP European goose down with Grangers fluorocarbon-free hydrophobic finish (355g / 12.5oz)
• L.O.F.T 3D baffle technology reduces down migration
• Sidewall baffle construction for increased down loft and greater side sleeping comfort
• Anatomically fitted hood with drawcord adjustment
• Internal cordlocks positioned below the collar bone
• 3D shaped down-filled neck collar
• 1/2 length YKK 3 coil main zip with down-filled baffle
• Anatomically shaped foot box
• Lightweight dry bag compression stuff sack
• Zipped storage sack with water-resistant base for home storage
• Hand-filled in Derbyshire UK
• Tapered mummy shape