Rab Mythic Ultra 360 Sleeping Bag

Free delivery
On all UK orders over £50*.
Standard delivery
Dispatched within 48 hours, or 3-5 days if sourced from store.
Next day delivery
Next day delivery is available Monday-Thursday only
Not available
Order before 1pm for guaranteed next day delivery on this item*
Click & Collect
Collect this item from one of our stores free of charge

Building on the strength of their Mythic series, Rab continue to push the boundaries in sleeping bag design. Looking at ways to increase thermal efficiency further, they incorporated Thermo Ionic Lining Technology into the Mythic Ultra 360's construction. A heat-reflecting liner, it significantly increases warmth, thus allowing Rab to reduce the amount of down needed for a lower weight without a comfort reduction. Paired with the proven chevron chambers, trapezoidal baffles and 900 fill hydrophobic down, the performance it can achieve is outstanding. With a category-redefining warmth-to-weight ratio, the Mythic Ultra 360 is a specialist piece for those looking to save every gram.


  • Superlight 7 denier ripstop nylon outer
  • Superlight 7 denier ripstop nylon inner with TILT
  • Thermo Ionic Lining Technology (TILT) reflects heat to boost warmth
  • Chevron shaped chambers efficiently stabilise the down, removing risk of down movement and cold spots
  • Trapezoidal baffle chamber design maximises thermal efficiency
  • Ergonomic internal collar and hood
  • ½ length zip with glow-in-the-dark zip pull
  • Anti-snag bonded zip guard helps prevent zip catching on fabric
  • Proportionally designed differential cut
  • Tapered mummy shape with an angled foot box
  • Lightweight dry bag compression stuff sack
  • Cotton storage sack
  • Hand filled in Derbyshire, UK


  • Insulation: 900 fill Hydrophobic Responsible Down Standard (RDS) goose down
  • Total weight: 606g
  • Max user height: 185cm
  • Shoulder width: 70cm
  • Stuff sack size: 36cm x 18cm
  • Available in left hand zip only

EN Temp ratings (comfort/limit/extreme): -2°C/-8°C/-27°C

Season rating icon: 3 season

Insulation icon: Down