Mammut Stoney HS Thermo Pant - Women's

Stoney HS Thermo Pant delivers insulated warmth with waterproof stretch protection

What Our Gearhead® Experts Are Saying:

"These pants are a perfect mix of warmth and performance. The insulation is just enough to keep me cozy on frigid days without overheating, and the DRYtechnology Pro shell keeps me bone dry in heavy snow. I especially love the thigh vents for dumping heat on warmer laps, and the waist adjusters make dialing in the fit super easy."

When the mercury drops but the powder is calling, the Mammut Stoney HS Thermo Pant keeps us warm, dry, and riding in comfort all day long. Built with Mammut’s DRYtechnology Pro two-layer membrane, these pants shield us from snow, wind, and slush while allowing breathability for hard-charging laps. A PFC-free DWR finish adds another layer of eco-conscious water repellency.

Lightweight Ajungilak OTI Element synthetic insulation provides reliable warmth without weighing us down, making these pants perfect for single-digit days on the mountain. Thigh vents let us release heat when we’re bootpacking or hiking to fresh stashes, while reinforced Cordura kick patches protect against sharp ski edges and crampon scuffs. An adjustable waistband and integrated snow gaiters complete the design, ensuring a secure fit and full protection through deep powder runs and long chairlift rides.

Details

Insulated ski and snowboard pant designed for cold winter conditions
DRYtechnology Pro 2-layer waterproof membrane keeps out snow and slush
Ajungilak OTI Element synthetic insulation adds low-bulk warmth
PFC-free DWR finish repels moisture for eco-friendly performance
Thigh vents allow for quick cooling on warm or high-output laps
Adjustable waistband secures fit and layers comfortably
Cordura kick patches add durability against ski and boot edges
Integrated snow gaiters seal out deep powder
Item #MAMU5WX

Material: [membrane/laminate] DRYtechnology Pro (2-layer), [face fabric] 88% nylon, 12% spandex, PFC-free DWR treatment, [lining] 57% polyester, 43% nylon, [kickpatches] Cordura
Insulation: 60g Ajungilak OTI Element (100% polyester)
Waterproof Rating: 20,000mm
Breathability Rating: 20,000g/m²
Fit: relaxed
Pockets: 2 zippered hand, 1 zippered thigh
Venting: side zippered vents
Waist: hook-and-loop adjustable
Cuff Closure: snap buttons
Gaiters: elastic
Claimed Weight: 1lb 5.73oz (616g)
Manufacturer Warranty: limited 2 years
Activity: all-mountain skiing, all-mountain snowboarding

Reviews

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Overall Rating

5 based on 2 ratings

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5 out of 5 stars

January 10, 2025

So comfortable!

Familiarity:: I've used it several times
Size Bought:: 4

Love these pants! Warm and comfortable. Also stylish and not frumpy! Super happy with this purchase!

Shellski

5 out of 5 stars

December 31, 2024

Great insulated pair of snow pants. I live in Alaska and wore these skiing at temps in the single digits and stayed warm. I have been looking for a new pair for a while and haven't liked any I have tried until these. I am 5-3, 115 lbs and the size 6 fits perfect with the added bonus of sinching at the waist. Would have gone for the short length but they were out of stock. These actually have some shape to them and are not completely boxy which I love!

Rachel S