Klattermusen Allgron 2.0 Jacket | Review - Outdoors Magic

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Klattermusen Allgron 2.0 Jacket | Review

An update of Klattermusen’s best selling four-season shell jacket

Why We Chose The Klattermusen Allgron 2.0 Jacket: Seriously tough, eco-friendly, four-season mountain-climbing shell from an award-winning brand

Based in Åre, Sweden, Klattermusen are one of those comparatively smaller outdoors brands (at least in the UK) that might have passed you by in previous years. Not because they aren’t brilliant (they are), but because they do things in an understated way. Rather than injecting big chunks of their resources into flashy PR stunts, Klattermusen are all about focusing on their craft and letting their products do the talking. In many ways, they’re like that shy kid at school who surprised everyone at the talent show with their angelic singing voice and ‘Grade Eight’ piano skills.

At ISPO 2020, we were blown away by the number of award winners Klattermusen had in their line-up (we’d sort of lost count over the years). One of the products that really stood out to us at the Munich-held tradeshow was the Allgron 2.0 four-season shell jacket. It just ticked so many boxes that we couldn’t not include it in this year’s Outdoor 100. Let’s dive in and discuss it now.

The 3D adjustable hood more closely follows your head movements. Photo: Mike Brindley

Who Is The Klattermusen Allgron 2.0 For?

In Swedish, Klattermusen means ‘climbing mouse’. With that in mind, there’s no prizes for guessing that the Allgron 2.0 is aimed at mountain-loving climbers in particular. The pockets, for example, have been deliberately positioned so as to not interfere with any potential climbing harness, there’s a two-way main zip to help with that as well, and the arms have the right articulation to allow high, unhindered reaches.

“In Swedish, Klattermusen means ‘climbing mouse’”

If all this talk of climbing is putting you off however, rest assured that the Allgron 2.0 is just at home on everyday adventures as it is when it’s a stone’s throw away from the summit of Kebnekaise – Sweden’s highest mountain.


The Klattermusen Allgron 2.0 is made from fluorocarbon-free Cutan. This material is stretchy, comfortable, and as quiet as a particularly stealthy (climbing) mouse. As well as being fluorocarbon-free, the jacket’s Ultramid Bio-mass Balance Polyamide uses renewable resources; meaning it scores well on the environmental front. Last but by no means least, so as to ensure it can stand up to harsh surfaces, the Allgron 2.0 has been reinforced with Duracoat, a surface treatment that toughens up a fabric in high wear areas. Yes, fear not, this product is more than tough enough to handle the rough stuff, though bear in mind that at 624g it’s not the lightest of mountain jackets out there (though it’s not the heaviest either).


The jacket has underarm ventilation zips. Photo: Mike Brindley
There's a Recco detector for safety. Photo: Mike Brindley
In Swedish, Klattermusen means 'climbing mouse'. Photo: Mike Brindley


The Allgron 2.0 has the kind of cleverly implemented features we love to talk about in the Outdoor 100. Special shoutout here to the 3D-adjustable hood that closely follows the movement of your head and, thanks to its slight peak, provides a good level of protection even in ferocious downpours. There’s also that protective, storm-flap-covered zip which is offset to the side of the chin and has a button at the base so you can open up the front of the jacket for loads of ventilation while remaining covered from the rain. On that note, there’s also underarm ventilation as well, so you can really regulate your temperature when you’re working up a sweat in extreme conditions.

“The hood provides a good level of protection, even in heavy downpours”

The sleeve cuffs are interesting. They feature adjustable toggles and elastic sleeve ends that make the jacket move with your body rather than against it. You can either wear the sleeves right over your wrists, like a normal jacket, or you can use the adjustment taps on the inside as little thumb loops so that the sleeves will stay put as you’re, say, reaching up for a hold. It’s the first time we’ve seen this system before and we’re really impressed.

Finally, and most importantly when it comes to safety, the Allgron 2.0 features Recco technology, another sign that Klattermusen have made this for those who intend on venturing high up above the treeline.

Pockets are accessible even when using a climbing harness. Photo: Mike Brindley

Environmental Credentials

Despite so much progress made by outdoor brands on the environmental front in recent years, it’s clear that there’s still a way to go on this front when it comes to core outdoor gear. That being said, the Allgron 2.0 does manage to be suitable for extreme mountain environments while also doing a decent job on the environmentalism scoreboard.

Free of fluorocarbons and made from Ultramid Bio-mass Balance Polyamide (using renewable resources), this jacket is definitely ticking some eco-friendly boxes. It’s not necessarily, on its own, world-changing levels of impressive but we do think it’s cool to see and worthy of a mention.


It’s price point of £450 means the Allgron 2.0 won’t necessarily be for everyone. If you’re just a weekend warrior, who likes casual countrywide strolls to the pub, you’re probably best off looking elsewhere to be honest (see the Patagonia Torrentshell 3L, priced at £140). If, however, you’re a genuinely diehard mountain person who loves clipping into harnesses and getting a bit extreme now and then, this jacket will more than justify the extra spend.

Klattermusen Allgron 2.0

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