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Alper Proof

FW 25 Alper Proof ski clothing set red in the slopes

Alper Proof

For the slopes and beyond

  

  

  

  

  

  

Alper Proof

Our new ALPER PROOF shell set is equipped for encounters with snow, wind, and rain—from the resort slopes to off-piste adventures. You’ll discover reliable and breathable waterproofing and classic ski day features. 

Alper Proof Skier and detailed
Alper Proof Red Jacket model

Alper Proof Jacket

This is a fully featured weatherproof ski jacket for the resort and beyond. Breathable 3-layer PROOF™ Pro shell fabric makes it ready for encounters with snow, wind, and rain.

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3-layer PROOF™ Pro shell for durable and breathable weather resistance

Adjustable helmet-compatible hood

Zippered underarm ventilation Two zippered hand pockets, one chest pocket, and ski pass pocket on sleeve

 

Alper Proof Pants detailed images
FW25 Alper Proof Black Pants model

Alper Proof Pants

These shell pants keep the snow out while supporting your comfort with an adjustable waist, pre-shaped articulated knees, and thigh vents. 

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3-layer PROOF™ Pro shell for durable and breathable weather resistance

Zippered thigh ventilation

Snow gaiters with elastic webbing and rubber grip

High velcro-adjustable waist

 

  

  

  

  

  

  
Skiing in the dark Mobile

PROOF™

Waterproof Technology 

 

PROOF™ is our proprietary waterproof technology rooted in the longing to explore nature alongside its changeable and often relentless elements—in Sweden and beyond. With a range adapted to the specific needs of different outdoor activities and aligned with our values, PROOF™ products are always waterproof, windproof, breathable, fully seam-sealed, and made as responsibly as possible. 

What makes it PROOF™? 

To earn the PROOF™ label, a product must withstand at least 10,000 millimeters of water pressure and be windproof, breathable, and have fully taped seams. PROOF™ products are made using recycled materials and treated with Durable Water Repellent (DWR) that is free from intentionally added per- and polyfluoroalkyl substances (PFAS) to prevent the outer fabric from becoming saturated. 

  • Waterproof 
  • Breathable 
  • Fully seam-sealed 
  • Made from recycled materials 
  • Free from intentionally added PFAS since 2025
Skiing in the sunrise

Meeting the demands of your next outdoor adventure  

Our PROOF™ range offers PROOF, Air, and Pro variants to rise to the performance demands of different activities and conditions—from everyday use in light rain showers to longer excursions under heavy precipitation.  

 

PROOF™   

For everyday use in mild to wet conditions with light precipitation.   

  • Hydrostatic head: Good (>10,000 mm)    
  • Breathability: Good (>10,000 g/㎡)   

 

PROOF™ Air   

For high-intensity activities in wet conditions with moderate precipitation.   

  • Hydrostatic head: High (>15,000 mm)   
  • Breathability: Outstanding (>20,000 g/㎡)   

 

PROOF™ Pro   

For longer activities in very wet conditions with heavy precipitation.    

  • Hydrostatic head: Outstanding (>20,000 mm)     
  • Breathability: High (>15,000 g/㎡)  

 

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