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Alpha Comp Pant Men's


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Alpha Comp Pant Men's Composite construction pants with versatile thermal management and zonal weather protection in a single garment. Alpha Series: Climbing and alpine focused systems.

Composite construction pants with versatile thermal management and zonal weather protection in a single garment. Alpha Series: Climbing and alpine focused systems.

Genepi Green
8 Detail Photo(s), 2 Video(s)
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XS, S, M, L, XL
420 g / 14.8 oz
Trim fit, with e3D patterning, Tapered leg
Sizing Chart: 


Ice climbers and alpine climbers move quickly, generate a lot of heat yet require waterproof protection from spindrift, water, and falling snow. Streamlined for light weight and energy efficiency, the Alpha Comp Pant has a trim fit to maximize fabric technologies and reduce crampon snag, with e3D to accommodate free movement of layers.

Fortius 1.0 stretch woven fabric regulates heat and provides stretch through the core areas and back of the knees. N40p 3L laminated GORE® Product Technology provides durable weather protection across the seat, front of the legs and lower leg cuffs.

Zippered lower leg adjusts to two volumes to accommodate the different needs of ski boots, alpine travel and climbing with crampons. Extremely durable Keprotec® provides instep protection.

Learn More About This Product

Arc'teryx Fit Guide - e3D

Ergonomic 3-Dimensional (e3D) patterning brings an additional level of articulation to provide enhanced range-of-motion in our Trim, Athletic, and Expedition fit categories. The application of e3D patterning allows for enhanced mobility for sport-specific activities in challenging environments.


Climbing and alpinism focused pieces: harness compatible length and waistline; chest pockets accessible while wearing a pack or harness; maximum articulation for overhead motions; helmet compatible hoods; drop hem; highest possible durability-to-weight ratio; emphasis on lightweight materials.

Full Feature List

Technical Features
  • Weather resistant
  • Breathable
  • Durable
  • Versatile—ideal for multi-climate usage
  • Micro-seam allowance (1.6 mm) reduces bulk and weight
  • Taped seams for added weatherproofness
  • DWR finish (Durable Water Repellent) helps repel water from fabric surface
  • Composite construction
  • e3D Ergonomic 3-Dimensional patterning for enhanced comfort and mobility
  • Gusseted crotch
  • Lower leg gusset
Zippers & Fly Configuration
  • WaterTight™ external zippers
  • Front fly with snap closure
  • 1/4 length ankle zip with gusset
Cuff & Sleeves Configuration
  • Adjustable pant cuff drawcord
  • Expanding gusset in the pant cuff adjusts to two volumes to accommodate various types of footwear.
Waist & Belt Configuration
  • Adjustable integrated webbing belt
  • Snap waist closure
  • Soft, brushed lined waist
Pocket Configuration
  • Thigh pocket sits just below a climbing harness
  • Zippered thigh pocket with flap
  • Reinforced instep patch


  • N40p 3L laminated Gore® Fabric Technology
  • GORE-TEX®  
  • Fortius 1.0™—84% nylon, 16% elastane, 160 g/m². Lightweight, durable, non-insulated, stretchy nylon/spandex blend textile.


  • Machine wash in warm water (30°C).
  • Double rinse.
  • Do not use fabric softener.
  • Tumble dry on medium heat.
  • Do not iron.
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