A climber geared up in Mammut equipment skillfully ascends a glistening ice wall using top-notch ice axes and ropes. The intricately textured ice sparkles under the light, showcasing the premium quality of Mammut's climbing gear.

Mammut
DRY
Expedition

Our breathable, waterproof hardshell technology, offering abrasion-resistant protection for ambitious mountain tours.

Mammut DRY Expedition is your abrasion-resistant, protective outer layer, made for extreme conditions and challenging alpine expeditions. Designed in the Swiss Alps and tried and tested by athletes: this hardshell technology has been developed to tackle the challenges of high alpine terrain. Using resourceful materials, from recycled fabrics to PFC-free membranes and DWRs, it guarantees peak performance. 

The benefits 

  • Reliably waterproof 

    From the lab to the mountains – our hardshells have undergone intensive testing to ensure 100% protection. 

  • Ultra-breathable

    Moisture is transported away to optimally regulate your body temperature.

  • Incredibly durable

    Your hardshell is made for high alpine tours and withstands intense rock contact without any problems.

Designed for

    Designed for

  • Mammut climber in specialized winter gear ascending icy terrain with ropes and ice axes, amidst striking blue ice formations.
  • Individual wearing a beige Mammut hooded jacket with face partially obscured, gazing downward against a vibrant blue backdrop.
  • Two climbers equipped with Mammut gear ascend a towering icy crevasse; one higher up uses ice axes, roped for safety, surrounded by stunning blue ice walls.
  • Mammut climber in full gear gazing upward inside a deep ice crevasse.

Details 

  • Water column

    > 20.000 mm

  • Breathability

    > 20.000 g/m²/24h

  • Material

    recycled polyamide, at least 40 denier

  • Testing method

    storm test (lab), field test

Styles with Mammut DRY Expedition 

“Built
for
the
most
extreme
conditions,
Mammut
Dry
Expedition
combines
uncompromised
storm
protection
with
class-leading
durability.
It
will
keep
you
dry
in
the
world’s
harshest
environments
for
hours.”

Tim FermTeam Lead Product Management Apparel

How the technology works 

Close-up of a Mammut brown jacket sleeve with water droplets and the iconic white mammoth logo inside a circle.

Hardshells with Mammut DRY Expedition are typically composed of three layers, joined together to form a laminate. On the outside is the durable, abrasion-resistant face fabric with a DWR ↗ (Durable Water Repellent) coating. The centrepiece in the middle is the membrane. This is what makes your hardshell waterproof, and allows it to efficiently transport sweat to the outside. The backer protects the membrane from chafing and enhances overall comfort. 

 Hardshells with fewer layers swap out the inner layer. Double-layer hardshells replace it with either a loose mesh or insulation on the inside, while 2.5-layer hardshells add a thin print to protect the membrane, making the style even lighter, more breathable and easier to pack down small. 

Watch how we developed Mammut Dry

Compare Mammut DRY Expedition

Water column

Breathability

DRY Expedition

DRY Active

DRY Tour

> 20.000 mm
> 15.000 mm
10.000 - 20.0000 mm
> 20.000 g/m²/24h
> 20.000 g/m²/24h
10.000 - 20.000 g/m²/24h

Get to know our other technologies

Mammut
DRY
Active

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Two climbers with Mammut backpacks traverse a rocky mountain ridge, surrounded by snow-covered peaks at dawn.

Mammut
DRY
Tour

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Person smiling in a Mammut orange rain jacket, adjusting the hood outdoors near a scenic lake and lush greenery in the background.