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Alpha AR Jacket


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Alpha AR Jacket Men's Light, hardwearing, extremely versatile GORE-TEX® Pro jacket made with a lightweight N40p-X body and burly N80p-X reinforcements. Alpha Series: Climbing and alpine focused systems | AR: All Round.

Light, hardwearing, extremely versatile GORE-TEX® Pro jacket made with a lightweight N40p-X body and burly N80p-X reinforcements. Alpha Series: Climbing and alpine focused systems | AR: All Round.

Adriatic Blue
Carbon Copy
Diablo Red
Genepi Green
9 Detail Photo(s)
XS, S, M, L, XL, XXL
385 g / 13.6 oz
Athletic Fit, with e3D patterning, Hip Length
Sizing Chart: 
Gender Equivalent Product:


A finely tuned balance of light weight, extended durability, ergonomic performance and superior weather protection, this is a solid choice for climbers and alpinists looking for an all-round hardshell to perform across the spectrum of alpine conditions. The Alpha AR has a streamlined athletic fit and ergonomic e3D patterning that deliver maximum freedom on rock and ice.


Ergonomic fit is a key Arc’teryx design detail. True freedom of movement is not achieved by adding excess volume or space, but is the result of careful utilization of ergonomically planned articulation designed to move as the body moves. Arc’teryx Ergonomic 3-Dimensional (e3D) patterning crafts the shapes of the parts in key joint areas to bring a remarkably efficient level of articulation that provides the Alpha AR’s exceptional, purpose specific range of motion.


The Alpha AR is a climber’s jacket, and features are selected to meet the alpine environment. Easily accessible crossover pockets sit high and work with harness and packs. The full coverage helmet compatible StormHood™ cinches tight, moves with the head and provides exceptional peripheral vision. Removable HemLock™ inserts keep the jacket in position while in use with a harness. Pit zippers add ventilation, and laminated WaterTight™ zippers help seal out weather.


Reliability comes from selecting the best materials. N40p-X GORE-TEX® Pro 3L has a high tenacity nylon face fabric that leverages a flat filament warp yarn and false twist textured fill yarn to provide excellent initial water repellency. Backed with a micro- grid woven backer, this waterproof/breathable fabric is notably lightweight and durable. The N80p-X GORE-TEX® Pro reinforcements at the shoulders, forearms and cuffs are specifically placed to protect areas exposed to high levels of abrasion. Strategically mapping these reinforcements allows Arc’teryx to deliver a jacket with longwearing performance and protection that weighs a mere 385 grams.

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Helmet Compatible Stormhood™

Helmet Compatible Stormhood Helmet Compatible Stormhood™

The Arc'teryx helmet compatible Stormhood™ is designed to provide the ultimate protection in cold or wet weather. The laminated brim and hood adjusters secure tightly and deliver full coverage without restricting movement or visibility.

Key Advantages

  • Laminated brim
  • Adjustable hood cinch cords
  • Tall collar for full coverage

Harness HemLock™ Insert

Harness HemLock™ Insert Harness HemLock™ insert

The Arc'teryx Harness HemLock™ insert is designed to keep your jacket from riding up when wearing a climbing harness. The foam insert can be removed when not needed.

Key Advantages

  • Lightweight
  • Functional — keeps jacket in place when worn under a climbing harness
  • Removable

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.

Arc'teryx Fit Guide - Athletic Fit

Standing in as our “Arc’teryx Standard” fit, the complex patterns used utilize anatomical shaping and gussets to enhance motion and eliminate excess bulk. Trimmer than the Relaxed fit with room for a base layer, a light fleece mid-layer and a synthetic or down filled mid-layer.

To find out how to calculate your body measurements, view our Sizing Charts:

Men's Tops | Men's Bottoms
Women's Tops | Women's Bottoms


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.

AR | All Around

Provides high performance & weather protection and highlights a range of features to give All Around versatility in multiple activities.

Full Feature List

  • Waterproof
  • Windproof
  • Breathable
  • Lightweight
  • Durable
  • DWR finish (Durable Water Repellent) helps repel water from fabric surface
  • Micro-seam allowance (1.6 mm) reduces bulk and weight
  • Fully seam-sealed for waterproofness
  • GORE-TEX® three-layer construction
  • Strategically placed narrow GORE® seam tape (8mm width)
  • One-hand adjustable drawcords
  • Generous cut for easy layering
  • e3D Ergonomic 3-Dimensional patterning for enhanced comfort and mobility
  • No-lift gusseted underarms
  • Helmet compatible StormHood™
  • Laminated brim
  • Adjustable hood drawcords
  • Glove-friendly hood adjusters
  • Laminated chin guard with brushed microsuede facing for added comfort
  • WaterTight™ external zippers
  • Pit zippers for easy venting
  • Full front zip with wind flap
  • Micro corded zipper pulls
  • Die-cut Velcro® cuff adjusters reduce bulk, and won't catch or tear off
  • Adjustable hem drawcord
  • Drop back hem
  • Harness HemLock™ inserts keep jacket in position under harness
  • Two high, crossover hand pockets with laminated zippers
  • Internal zippered pocket
  • Note: Our WaterTight™ zippers are highly water resistant, but not waterproof. We do not recommend keeping items in your pockets that may be damaged by moisture
  • Reinforced hood, shoulders and forearms


  • N80p-X GORE-TEX® Pro 3L
  • N40p-X GORE-TEX® Pro 3L


  • Machine wash in warm water (30°C).
  • Double rinse.
  • Wash dark colours separately.
  • Do not use fabric softener.
  • Remove from washer immediately.
  • Do not leave wet.
  • Tumble dry on medium heat.
  • Do not iron.
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