Mythic Ultra 360 Sleeping Bag 17.6F/-8C

29% OFF

$603.49

$849.99Save $246.50 (29%)

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Price Historylast 2 months

Low $560.00 · High $603.49. Hover the line to see each change.

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The lowest price we’ve tracked since July 2026 is $560.99; today’s price is $603.49.
The current price has held for 14 days.
Across the 26 Sleeping Gear deals we’re tracking right now, the median discount is 39% — this deal’s 29% off is below that mark.

Based on prices we’ve recorded from The Last Hunt since July 2026, refreshed several times daily.

About this product

The Rab Mythic Ultra 360 is a high-performance mummy sleeping bag engineered for mountain marathon runners and alpinists who prioritize minimal weight without sacrificing warmth. Its outer shell is constructed from ultra-lightweight 7D ripstop nylon, and the interior features Thermo Ionic Lining Technology (TILT), which coats the fibres with titanium to reflect radiant body heat back toward the sleeper while maintaining breathability. The fill is 900-fill-power RDS-certified European goose down, treated with a fluorocarbon-free hydrophobic finish developed with Nikwax. Trapezoidal boxwall baffles promote even down distribution and reduce cold spots. Temperature ratings follow the EN13537:2016 standard, with a comfort rating of -2°C, a limit of -8°C, and an extreme of -27°C. The regular size weighs 645g and fits users up to 185cm, while the long version weighs 706g and accommodates users up to 200cm. A half-length YKK 3-coil zip with a glow-in-the-dark puller, an ergonomic hood and collar, and an angled foot box round out the design. The bag is filled in Derbyshire, UK, and ships with a compression dry bag and a cotton storage sack.

Category: Sleeping Gear
Brand: Rab
Color: Colour: Cloud - Graphene
Temperature: Comfort; -2°C ( 28°F), Limit; -8°C ( 18°F), Extreme; -27°C ( -17°F)
Customers Say: True to Size
Length (Long): 230cm / 90.6in
Weight (Long): 706g / 24.9 oz
Length (Regular): 215cm / 84.6in
Weight (Regular): 645g / 22.7 oz

What people are saying

Reviewers consistently praise the Mythic Ultra 360's outstanding warmth-to-weight ratio, driven by 900-fill hydrophobic goose down and Rab's TILT technology, which bonds titanium to the inner fabric to reflect body heat back to the sleeper. The bag earned "Product of the Year" at the UK Outdoor Industry Awards and real-world testers confirm it meets or exceeds its -8C temperature rating. The compact packed size, quality construction, and moisture-resistant down are also frequently highlighted. The most common criticisms center on the very high price and poor value-for-money scores from some outlets. Cold sleepers report mixed results on how much extra warmth the TILT lining actually delivers in practice. The double-slider zip is a recurring frustration, as it can be very difficult to reconnect with cold hands. The ultra-thin 7D nylon shell requires careful handling to avoid damage.