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Theta AR Jacket


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Theta AR Jacket Women's Highly versatile, thigh length women’s waterproof breathable shell designed using two different weights of GORE-TEX® Pro to maximize durability and minimize weight. Theta Series: All-round mountain apparel with increased coverage | AR: All-Round.

Highly versatile, thigh length women’s waterproof breathable shell designed using two different weights of GORE-TEX® Pro to maximize durability and minimize weight. Theta Series: All-round mountain apparel with increased coverage | AR: All-Round.

Pink Guava
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XS, S, M, L, XL
420 g / 14.8 oz
Athletic Fit, with e3D patterning, Thigh length, Centre back length: 74.5 cm / 29.3 in
Sizing Chart: 
Gender Equivalent Product:


The women's Theta AR Jacket is a GORE-TEX® Pro storm shelter with a longer thigh length cut for maximum coverage, purpose driven design and cross mountain versatility. Hybrid mapping technology strategically positions two weights of GORE-TEX® Pro fabric to optimize each one’s specific performance benefits. Highly breathable GORE-TEX® Pro with N40p-X face fabric is used in the main body. This supple, strong nylon ripstop keeps the jacket packable and light. Hardwearing N80p-X GORE-TEX® Pro provides abrasion resistance in the shoulders and forearms to elevate durability.


The Theta AR provides extensive coverage for backcountry ski tours, climbing and alpine travel. The hip length hem comes lower than other technical Arc’teryx GORE-TEX® shells to provide more protection from deep snow and driving rain. The length also helps the hem stay put under a harness or hipbelt. The helmet compatible DropHood™ adjusts quickly and easily, provides complete coverage with minimum impact on peripheral vision, and is designed with a separate collar that provides draft protection whether the hood is up or down. WaterTight™ pit zippers speed ventilation, and an adjustable drawcords at the waist and hem secure the fit and seal out cold. Pockets include two laminated internal pockets to safely store maps, wallet, smartphone or other small devices. A small laminated pocket on the sleeve is always in reach, and the hand pockets are pack and harness accessible.


With a focus on fit, freedom and performance, the Theta AR is indicative of the longstanding Arc’teryx commitment to deliver use specific, function driven products for women. Articulation at the elbows and gussets under the arms elevate ergonomic performance and comfort, and the streamlined Athletic Fit with e3D delivers enhanced freedom of movement with room for low profile midlayers.

Learn More About This Product

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

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.


All around mountain use garments: longest length; chest pockets; interior pockets; moderate – expedition articulation and room for layers; helmet compatible hoods; drop hem.

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

Technical Features
  • 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
  • Taped seams for added weatherproofness
  • Women's specific design and fit
  • Anatomical shaping for fit and comfort
  • Articulated elbows
  • e3D Ergonomic 3-Dimensional patterning for enhanced comfort and mobility
  • No-lift gusseted underarms
  • Athletic fit for a slimmer more flattering profile
Hood Configuration
  • Laminated brim
  • Adjustable hood drawcords
  • Helmet compatible DropHood™
Collar Configuration
  • Laminated chin guard
Zippers & Fly Configuration
  • WaterTight™ external zippers
  • Pit zippers for easy venting
  • Corded zipper-pulls reduce noise and are easy to grab
  • WaterTight™ Vislon front zip
Cuff & Sleeves Configuration
  • Laminated die-cut Velcro® cuff adjusters reduce bulk, and won't catch or tear off
Hem Configuration
  • Laminated hem
  • Adjustable hem drawcord
  • Drop back hem
Pocket Configuration
  • Sleeve pocket with WaterTight™ zip
  • Laminated sleeve pocket with laminated zip
  • Two internal laminated pockets
  • Two high-volume hand pockets
  • 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
  • N80p-X GORE-TEX® Pro reinforced highwear areas


  • 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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