Mammut Stoney HS Jacket & Pants Review: My Ski Shell for Storm Days
Why I wear the Mammut Stoney HS jacket and pants on powder days, in snowstorms, and in changing ski conditions.
Riding the Old Town lift in Park City in my orange Mammut Stoney jacket. Bright, visible, and warm—everything I want on a clear day.
Why I Chose the Mammut Stoney HS Ski Outerwear Kit
I love my Mammut ski gear. Love it. It feels great on and has held up through everything I’ve skied in.
I ski in variable weather—powder days in Colorado, icy runs in the Midwest, windy lift rides. I wanted outerwear that could handle it all without feeling bulky or restrictive.
I also like things that look clean but not overdesigned. The Stoney HS jacket and pants hit that balance perfectly: protective, minimal, and well-made.
And I like knowing it’s designed and made in the Swiss Alps. When a brand builds gear in the environment it’s meant for, it shows. The craftsmanship, fit, and function are dialed.
Mammut Stoney HS Jacket & Pants Facts
Stoney HS Hooded Jacket
All-mountain hardshell ski jacket
Mammut DRY Tour
15,000 mm water column
20,000 g/m²/24h breathability
Windproof
75D x 75D main material
Helmet-compatible adjustable hood
X-vented underarm ventilation
Water-repellent two-way front zipper
Two chest pockets with water-repellent zippers
Zippered sleeve pocket
Internal mesh and zippered pockets
Adjustable cuffs and hem
Detachable elastic snow skirt
Weight: 737 g
Stoney HS Pants
All-mountain hardshell ski pants
Mammut DRY Tour
15,000 mm water column
20,000 g/m²/24h breathability
Windproof
75D x 75D main material
Adjustable waistband
Two front pockets with water-repellent zippers
Two-way side ventilation
Integrated snow gaiters with anti-slip grip
Cordura-reinforced ski-edge protection
Weight: 539 g
Jacket: Mammut Stoney HS Hooded Jacket (Women’s) in Orange (older colorway)
Jacket: Mammut Stoney HS Hooded Jacket (Women’s) in Orange (older colorway)
Pants: Mammut Stoney HS Pants (Women’s) in Black
I’ve worn this combo in Vail, Beaver Creek, Breck, Park City, Powder Mountain, and some deep Midwest days, and it works great every time.
I feel the orange I have is like wearing a high-visibility vest worn in hazardous work situations. I can be seen so I don’t get knocked by a skier from behind. However, I have my eye on the Dark Marsh as seen below for next season.
Mammut Stoney HS Jacket in Dark Marsh.
Mammut Stoney HS Pants in Black.
Pro tip: The Mammut Stoney HS Pant comes in a thermal version which I have. I rarely wear them because they work so well and I can get hot. But, they are great for very cold windy days to have.
I’ve since moved into the newer Moss colorway, and I cover the updated fit, materials, and my experience with both versions in my Mammut Stoney HS Hooded Jacket Review: The Ski Shell I Wear All Winter.
How the Mammut Stoney HS Kit Performs on the Mountain
Waterproofing: Both pieces use Mammut DRYtechnology Pro, which is totally waterproof and windproof, even in heavy snow and chairlift rides.
Breathability: The venting zips work, and the fabric doesn’t trap sweat. The venting system comes in handy even at places like Vail—as the windy days are cold, but some you just get so hot.
Mobility: These don’t feel stiff or crinkly. I can bend, carve, hike, and stretch in them without resistance.
Pockets: The jacket has enough room for snacks, a pass, and a phone, and the pants have smart storage without bulk.
Durability: No tears, no seams popping, no wet-through after seasons of use. Still looks great.
What I Like
Clean design and modern fit
True all-weather protection
Long cut on jacket = great coverage
Jacket hood fits over a helmet
What I Don’t Love
Mammut sizing runs a bit Euro (slim fit—try a size up if layering)
Price is steep, but it’s outerwear that lasts
Pro tip: Mammut has a ton of sales. Sign up for their newsletter to learn when they are available. I’ve never paid full price for my gear. Heads-up: Sizes often sell out during those sales, so weigh your timing.
Final Take
If you’re looking for ski outerwear that actually performs in wind, snow, and spring slush—the Mammut Stoney HS jacket and pants are it.
This is the kit I wear the most. It packs small, breathes well, and keeps me dry even on the longest, coldest chairlift rides. It’s built for real mountain weather, and it’s held up season after season.
Frequently Asked Questions About the Mammut Stoney HS Jacket & Pants
Is the Mammut Stoney HS jacket waterproof? Yes. The Stoney HS uses Mammut DRY Tour with a 15,000 mm water column. I’ve worn mine through snowstorms, wet snow, and powder days and have stayed dry.
Is the Mammut Stoney HS jacket insulated? No. The Stoney HS is a hardshell rather than an insulated ski jacket. I prefer that because I can change my layers underneath depending on the temperature and conditions.
Are the Mammut Stoney HS pants insulated? No. The regular Stoney HS Pants are hardshell ski pants. Mammut also makes the Stoney HS Thermo Pants if you want an insulated version for colder ski days.
How breathable is the Mammut Stoney HS? The current Stoney HS jacket and pants have a breathability rating of 20,000 g/m²/24h. Both also have zippered ventilation, which I use when I start getting warm.
How does the Mammut Stoney HS jacket fit? I find the fit relaxed without being overly baggy. There’s enough room for me to layer underneath, and I don't feel restricted when I'm skiing.
Are the Mammut Stoney HS jacket and pants good for resort skiing? Yes. Resort skiing is primarily how I use mine. I like the weather protection for storm and powder days, while the ventilation makes the outfit versatile enough for changing conditions.
Are the Mammut Stoney HS jacket and pants worth it? For me, yes. They’re expensive, but I’ve used my Stoney HS gear across multiple ski seasons and in a wide range of conditions. I especially like the combination of weather protection, movement, ventilation, and the ability to adjust my layers underneath.
Shop My Mammut Ski Kit
I write Overland Girl, where I share firsthand travel experiences across the American West — from desert landscapes and national parks to small towns layered with history. My work blends movement, place, and the stories that shape them.
Some posts may include affiliate links to products or services I use on the road. If you choose to purchase through those links, I may earn a small commission at no additional cost to you. It helps support continued travel and storytelling. I only link to items I personally use or would use myself.