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Gear Review | Mammut Stoney HS Hooded Jacket und Stoney HS Pant

Versatile winter hardshell outfit

01/27/2025 • by Lorenzo Rieg
Mammut has had various iterations of the "Stoney" line in its program for some time now. These are very solid hardshells that cut a fine figure both on tours and in the ski resort. We have tested the current version of the Stoney line, the HS Hooded Jacket and HS Pants.

First Impression

As usual from Mammut, the Stoney combination has a high-quality finish and is otherwise a rather simple hardshell outfit. I tested the trousers in black and the limited edition jacket in the colour "GRAIN". The design of the jacket is inspired by the dynamics of freshly fallen powder. However, the black and white colour scheme - especially in combination with the dark trousers - creates a kind of snow camouflage. Of course, this is a matter of taste. However, I personally think it's better to be out and about in striking colours - on the one hand for visibility in an emergency, and on the other for photos.

The jacket has the usual features, i.e. underarm ventilation, a detachable snow skirt, two neat Napoleon pockets as well as a small and a large inner pocket, the latter of which is ideal for skins, for example. The helmet-compatible hood fits well and stays in place thanks to a small elasticated "inner shield" and moves well with the head. The width of the trousers can be easily adjusted using two Velcro fasteners and there are two pockets on the front of the thighs, one of which has a loop for attaching an avalanche transceiver. Reinforcements made of solid material on the inside of the legs provide effective protection against cuts from ski edges.

I really like the workmanship of the suit and the details. The zips are not only well positioned, but also smooth-running and very solid. The Velcro fasteners are also rather wide, which is conducive to a long service life, even if this means not having the lightest on the market. This applies in particular to the jacket, which is solid and stable, but not necessarily very light.

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Tester and test conditions

I am 183 cm tall and weigh about 80 kg. I'm wearing the jacket in L, which fits well but is rather generous. M would probably also work, but would be quite tight. I tested the trousers in size 52, which also fit well, although the legs are actually quite long, but the legs shouldn't be any tighter.

I've been testing the combination since mid-November, so practically the entire season. As a result, all relevant conditions have been covered, both in the ski resort and on ski tours, with the exception of spring conditions, of course, although there have been some quite warm days.

Test report

The combination wears well and fits wonderfully as described. In cold conditions, I can also wear a down jacket under the Stoney HS Hooded Jacket in addition to a fleece. Depending on the model, gloves also fit well under or over the cuffs, which can be easily adjusted with neat Velcro fasteners. The width of the trousers can also be easily adjusted at the waist, which makes them very comfortable on the one hand and reliably prevents them from slipping on the other. I really like the pockets on the trousers. In particular, the Napoleon pockets on the jacket and the two pockets on the trousers are very well thought out, as they are easily accessible and don't get in the way of rucksack straps. The Napoleon pockets on the jacket are also quite spacious, while the pockets on the thighs of the trousers are also large, but rather shallow, which is why larger items (such as an avalanche transceiver) can be a bit bulky or even get in the way. 

On the ascent, the jacket usually spends its time in or on my backpack, so of course it's noticeable that it's a fully-fledged ski hardshell and not a slimmed-down touring or lightweight mountaineering jacket. The weight and pack size are quite reasonable, but still on the heavier side. The material of the trousers is remarkably breathable on the ascent, but the ventilation zips on the outside are not very large, so I would like to be able to open the trousers a bit wider at higher temperatures.

Of course, the Stoney outfit is extremely waterproof - nothing else is to be expected from a new hardshell suit, but with the well-fitting trousers and robust jacket, you are really well protected from the elements. Whether it's powder, snowfall or storms, you'll be well dressed with this combination.

There is also nothing to complain about in terms of durability, at least in the test period, which is still relatively short to be honest. Robust material, well-placed reinforcements and details such as zips and Velcro fasteners are of high quality and well made. All in all, you are sure to enjoy the Stoney parts for a long time.

Conclusion

A very good all-rounder combination for all conditions and all types of winter sports. One outfit for everything, but a little heavier for ski touring.

Advantages and disadvantages

+ Very comfortable to wear

+ Robust material (especially jacket)

+ Very well distributed pockets

- Rather small ventilation zips on the trousers

Information

RRP €550 (jacket) and €420 (trousers)

Mammut DRY Tour Hardshellmaterial

Bluesign® certified

PFC-free DWR

Use of recycled material

Click here to go to the Mammut website for more information on the jacket and the trousers.

The combo was provided to PowderGuide free of charge by the manufacturer. You can find out how we test it in our test statement.

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