Why I Picked the Mammut Stoney HS Jacket

I wanted a ski shell that would work for both powder days and those extremely windy long chairlift rides without feeling bulky or stiff. I already had a super warm Mammut ski jacket but I wanted something more versatile, layering up and down.

I was already a fan and had the Stoney HS ski pants—this was just the missing piece. Mammut gear just fits right and moves well. Clean design, solid fabric, nothing overbuilt.

Fit and Features of the Mammut Stoney HS Ski Jacket

The Stoney HS jacket has that wide, freer fit I like—something that lets you move without restriction when skiing. It’s not one of those cropped jackets that sits at the waist—it fits like a true ski shell and still feels good in motion.

The hood fits over a helmet, but you can remove it—which I usually do. It fits true to size and doesn't feel bulky. The underarm zips are easy to open on the lift without having to crack the front zip, which helps regulate temp fast on colder days.

I appreciate the snow skirt and the smart pocket placement—nothing bulky, nothing in the way. The material has just enough stretch that it moves with you when skiing, bending, loading gear—or falling, like we all do sometimes.

How the Mammut Stoney HS Jacket Handles Wind and Weather

This jacket holds up in wind, snow, and sudden temperature drops. The 3-layer DRYtech shell is fully waterproof and has kept me dry on both wet powder days and sleety Midwest ones.

On cold lift rides, it blocks wind like a champ, especially when zipped up and the hood is up. Paired with a midlayer, I’ve been warm in single-digit temps without overheating on the way down. It's a great all-mountain shell.

Quick Look: Stoney HS Ski Jacket

3-layer DRYtech waterproof shell
Helmet-compatible hood
Underarm vents and snow skirt
Multiple pockets that work

What Makes the Stoney HS Jacket a Great Ski Shell

Warm but breathable
Moves well without feeling stiff
Great zip vents and waterproofing
Smart design for lift-access and touring days—excellent wind blocking on chairlifts

Who This Jacket Is Great For

If you want a ski shell that’s weatherproof but not bulky, the Stoney HS jacket pairs perfectly with the Mammut Stoney HS ski pants. It’s excellent for changing weather and anyone who skis in cold or wet conditions.

Pro tip: Mammut drops new colors every season. I have orange from a year ago—not my favorite, but I figured it’d help me stand out (and maybe avoid getting run into).

Final Take: Is the Mammut Stoney HS Jacket Worth It?

I’ve worn this jacket on Midwest groomers and Colorado powder days, and it’s great on both. Sometimes I wear a light jacket under it, sometimes just a wool base layer. Most of the time, once I get going, I heat up fast—that’s when I open the side vents. What I love about this jacket is its flexibility. Like all my Mammut gear, it’s incredibly comfortable. Warm when layered, breathable when moving, and built to last.

Pro tip: Mammut’s seasonal sales go quick—if you see your size, grab it.

Shop the Stoney HS Ski Jacket

More Mammut Gear Reviews I Wear and Use

Want more of the Mammut gear I’ve tested? Here’s what else I wear:

→ Mammut Stoney HS Ski Pants Review
Built for powder, corduroy, and Midwest ice—my ski pants for staying warm and dry.

→ Mammut Saentis TR Low GTX Review
The most comfortable lightweight, waterproof trail running shoe that feels fast and secure.

→ Mammut Aenergy Hike Low Review
A breathable hiking shoe that fits more like a trail runner—super comfortable.

Michele Underwood writes Overland Girl, where she shares gear she uses on real trips—from the Northwoods of Wisconsin to the Ozarks. She values quality and craftsmanship in everything she buys—from outdoor gear to everyday clothes and furniture. Her choices may seem expensive to some, but she believes in buying less and buying better. Longevity matters, both in terms of function and style. Her couch is five years old and still sold at Design Within Reach—that's the kind of timelessness she looks for. Some of the links in this review are affiliate links, which means she may earn a small commission if you buy through them. It doesn’t cost you anything extra, and it helps support her work. She only recommends gear she’d bring herself.

Gear Review: Mammut Stoney HS Ski Jacket – Women's

The jacket I wear with my Stoney HS ski pants—warm, breathable, and built for everything from powder days to those windy lift rides that can be brutal without the right gear.