UOG TOP PICK - Rab Mythic Ultra 180 Down Sleeping Bag - We've singled out Rab's Mythic Ultra as one of our top recommendations for when money is no object. This bag provides the best performance at this weight for any comparable bag. Cutting edge technology with enables amazing levels of warmth for the weight of the bag.
The Mythic Ultra is pushing the boundaries for technological advancements in sleeping bags. The warmth to weight ratio is spectacular thanks to the use of the Thermo Ionic Lining Technology and a combination of the best and lightest materials available. This is an exciting high performance sleeping bag.
Rab says:
The Mythic Ultra 180 redefines what it means to be ‘ultralight’. Using a world-first, heat-reflective fabric treatment called Thermo Ionic Lining Technology, this is premium protection for those counting every last gram
Designed and constructed by our in-house technicians on the back of 40 years of hard-won mountain expertise, the award-winning Mythic Ultra 180 is one of the world’s most advanced lightweight sleeping bags. Though constructed with an exceptionally light ripstop 7D outer and filled with high-loft 900+ fill power European goose down, the really special part is the inner lining. This incorporates world-first Thermo Ionic Lining Technology (TILT), which adds a titanium coating to the fibres to reflect heat back towards your body, enabling it to significantly boost warmth without increasing weight, compromising breathability or sacrificing any features.
Weighing just 400g, the stripped back insulation of our TILT-equipped Mythic Ultra 180 is the ultimate expression of performance without penalty.
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Rab's Mythic Ultra 180 Down Sleeping Bag is a superb example of what can be achieved through developing technology with this serious impressive piece of kit. The Mythic Ultra 180 uses just 180g of exceptional quality 900+ fill power down to reach an impressive Comfort Limit of 0°C. Usually this would not be enough down for that temperature rating but Rab have developed TILT, a Thermo Ionic Lining Technology which lines the inside of the bag. In simple terms this lining reflects the heat of the user back in reducing heat loss without affecting breathability.
The advanced boxwall construction uses trapezoidal baffles to allow the down to loft more effectively while eliminating the risk of cold spots. The overall weight of this bag has been kept down to just 394g with the combination of the top quality down, the special lining and using lightweight 7D fabrics. The down is able to loft quickly and effectively as soon as you get it out and give it a shake. Although it's not the roomiest of bags the fit certainly works well at reducing areas of cold air and keeping you warm through the night.
As you would expect with a bag for designed for this kind of temperature, there is an ergonomically designed collar and hood, angled footbox and anti-snag zip guard. However, as you might expect for a bag like this, it is a pretty slim fit, has a small zip making access slightly more restrictive and the fabrics used need to be treated with care to avoid damage. Overall, this is an amazing bag which is aimed at experienced backpackers and alpinists who value warmth and weight.
UOG TOP PICK - Rab Mythic Ultra 180 Down Sleeping Bag - We've singled out Rab's Mythic Ultra as one of our top recommendations for when money is no object. This bag provides the best performance at this weight for any comparable bag. Cutting edge technology with enables amazing levels of warmth for the weight of the bag.
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RAB Premier Sleeping Bag Stockist - Ultralight Outdoor Gear is a RAB Premier Sleeping Bag stockist. RAB recognises our knowledge and experience when it comes to advising customers about the sleeping bag that would best meet their needs. It also recognises the comprehensive range of RAB sleeping bags that we stock.
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Super lightweight 7D Ripstop Nylon Outer Fabric
Super lightweight 7D ripstop nylon with thermo ionic lining technology (TILT), heat reflecting to boost warmth
900+FP R.D.S Certified European Goose Down
Rab® Flourocarbon free Hydrophobic Down developed in conjunction with Nikwax®
Weight saving baffle construction, preventing down shift/migration
Trapezoidal chamber design to eliminate cold spots
Proportionally designed differential cut
Anti snag bonded zip guard
Ergonomically designed internal collar and hood
Angled foot box
1/8 length YKK® 3 coil main zip with noctilucent puller
Insulation: 900+ FP R.D.S. Certified European Goose Down
What is the 'RAB Sleep Limit'? - The recognised method of testing sleeping bags is by using the standard EN13537 temperature ratings, which are carried out by independent testing houses. The test is performed with the sleeping bag resting on an insulating mat to simulate the bag in use. The same sleeping mat is used for all testing of all sleeping bags.
RAB's view is that the sleeping mat used is inappropriate for bags designed for very low temperatures because a user would be sleeping on a highly insulative winter orientated sleeping mat, not the standard one used in the test. The test results would therefore indicate a lower performance for the sleeping bag than a user would experience in a typical situation.
RAB have therefore defined their own 'RAB Sleep Limit' as the equivalent 'Comfort limit' but based on their athletes experience and extrapolating results from other bags.
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