Arcteryx Men's Theta AR Jacket

Arcteryx Men's Theta AR Jacket is rated 4.85 out of 5 by 20.
  • 2016-05-26T14:29CST
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Product Description Item No.   10220099

The Arcteryx Men's Theta AR Jacket is a favorite among Moosejaw employees and seasoned veterans alike. I'm not trying to say we're not seasoned veterans, some of us are. I'm just saying that Steven in accounting loves his Theta AR for rain protection from his car to the office, whereas J.T. utilizes his for backcountry skiing. Fully featured with GORE-TEX® Pro Shell, pit zips, anatomical shaping, pack pockets, taped seams and tons of other features, this all-around technical mountain shell will handle whatever you throw at it.

Moosejaw Staff Pick
"The Arcteryx Men's Theta AR Jacket is totally awesome, you guys. The Theta AR makes a great rain jacket in the spring, and an even better hardshell in the winter when you learn how to layer properly. Plus, you get to look like a total pro when everyone else around you is wearing boring jackets."
Matt - Moosejaw Secret Headquarters

FEATURES of the Arcteryx Men's Theta AR Jacket

  • Rugged, durable and breathable GORE-TEX Pro Shell; light and supple 40D fabric through main body, reinforced in high wear areas with hardwearing 80D fabrics
  • DWR finish sheds snow and rain
  • WaterTight Vision center front zipper seals out the elements
  • Helmet compatible DropHood with fast adjustment is designed to rotate with your head
  • Two hand pockets, internal laminated pocket with zipper, and sleeve pocket
  • Laminated drop back hem gives you full seat coverage and is adjustable to help keep cold drafts out
  • Taped seams with 1.6mm seam allowance keeps water out and reduces bulk and weight
  • Gusseted underarms, articulated elbows, and anatomical shaping provide exceptional comfort and increase range of mobility
  • Arcteryx's 'Standard Fit' is trim, with room for a base layer and light fleece, syntehtic, or down mid layer
  • Sleeve pocket with WaterTight™ zip, internal chest pocket with laminated zip and two high-volume hand pockets
  • Laminated die-cut Velcro® cuff adjusters with elastic
  • Glove-friendly hood adjusters
  • Laminated chin guard

- + Product Specifications
Breathability: Good Breathability
Type of Waterproofing: GORE-TEX 3L
Jacket Fabric: 100% Nylon
Weight: 17.1 oz
Disclaimer: We only ship this brand to US Addresses.
Product Technology: GORE-TEX Pro
Exterior Pockets: 3
Hood Type: Helmet Compatible, Fixed, Adjustable
Waterproof: Yes
Jacket Shell Fabric: 100% Nylon
Gender: Mens
Features: Adjustable Drawcord Hem, Pit Zips, Helmet Compatible Hood, Hood, Internal Pockets, GORE-TEX, Adjustable Hood
Jacket Length: Thigh
Best Use: Hiking, Rainwear, Skiing, Makin' Friends Jealous, Snowboarding
Fit Type: Regular Fit
Collection: Mountain Performance
Insulation: Synthetic

GORE-TEX Pro material offers maximized ruggedness and is ideal for extreme and extended use, like mountaineering, climbing or skiing. Super durable, super waterproof, super windproof. Its only weakness might be Kryptonite.

Men's Jackets, Shirts and Tops
SIZE X-Small Small Medium Large X-Large XX-Large
Chest 36" 38" 40" 43" 46" 50"
Waist 29" 31" 33" 36" 39" 43"
Hip 36" 38" 40" 43" 46" 50"
Sleeve Length 32" 33" 34" 35" 36" 37"
Numeric Size 36 38 40 43 46 50

• Arc'teryx recommends you calculate your body measurements using the info in the Measurement Guide below before selecting a product size. The measurements provided in their size guides refer to your body measurements unless otherwise specified.

• Check the fit type in the product FEATURES and SPECIFICATIONS and refer to the Fit Guide below to ensure you are ordering a product for the correct end use.

Men's Pants
SIZE X-Small Small Medium Large X-Large XX-Large
Waist 29" 31" 33" 36" 39" 43"
Hip 36" 38" 40" 43" 46" 50"
Length (Short) 28 1/2" 29 1/8" 29 3/4" 30 3/8"
Length (Regular) 30 1/2" 31 1/8" 31 3/4" 32 3/8"
Length (Long / Tall) 33 1/2" 34 1/8" 34 3/4" 35 3/8"

• Please note that the actual pant length may vary slightly from the info above, depending on the intended end use of the product.

Men's Numeric Pant Sizing
SIZE 28 30 32 33 34 36 38
Waist 28" 30" 32" 33" 34" 36" 38"
Hip 35" 37" 39" 40" 41" 43" 45"
Inseam 32" 33" 33 1/2" 34" 35"

• Several models of Arc'teryx pants are sized numerically and available in different inseam lengths. You will see these sizes reflected in the options in the Select a Size drop down menu for particular products.

• For all other pants available in numerical waist sizes where the inseam length is not specified, the inseam lengths provided above apply.

SIZE Small / Medium Large / X-Large
Head Circumference 21.7 - 22.4" 22.8 - 23.6"
Men's Gloves
SIZE X-Small Small Medium Large X-Large
Hand Width 7.6 - 7.9" 7.9 - 8.2" 8.2 - 8.6" 8.6 - 8.9" 8.9 - 9.3"
Hand Length 7 - 7.2" 7.2 - 7.5" 7.5 - 7.7" 7.7 - 8" 8 - 8.2"
Unisex Gloves
SIZE X-Small Small Medium Large X-Large
Hand Width 7.3 - 7.6" 7.8 - 8.1" 8.2 - 8.6" 8.6 - 8.9" 8.9 - 9.3"
Hand Length 7 - 7.2" 7.2 - 7.5" 7.5 - 7.7" 7.7 - 8" 8 - 8.2"


Chest / Bust - Measure around your chest / bust, holding the measuring tape under your armpit.

Waist - Measure around the natural waist, which is often the narrowest part of your waist.

Hip - Measure around your hips at the widest part.

Sleeve Length - With your arms in a slightly bent position, measure from the center of the back of your neck, along the length of your arm, to the wrist.

Inseam / Pant Length - From a standing position, measure from your crotch to your ankle.

Head Circumference - Measure the full circumference around the widest part of your head.

Hand Length - Measure from the tip of your middle finger to the base of the palm.

Hand Width - Measure the circumference of your hand around the knuckles, excluding the thumb.

• Please note that all the info provided above refers to body measurements, and NOT the dimensions of the garment.


Next to Skin Fit - These snugly-fitting garments are made with stretch fabrics to fit next to the skin to enhance moisture management and thermal efficiency. Garments in this fit category when constructed using Arc'teryx's heavier-weight AR and SV fabrics also perform very well as mid layer pieces, and users should consider selecting a larger size to accommodate a base layer underneath if the intention is to use this layering system as a mid layer option.

Trim Fit - Trim-fitted garments share the motion-friendly traits with Arc'teryx "Athletic" fit garments, but are patterned with lower volume for reduced bulk. These close-fitting pieces layer well under other garments.

Athletic Fit - This is the "Arc'teryx Standard" fit. These complete patterns utilize anatomical shaping and gussets to enhance motion by minimizing excess bulk. Easy layering under or over each item extends seasonal versatility and comfort.

Relaxed Fit - Relaxed fit garments rely on higher volume patterns and a reduced amount of articulation to offer roomy mobility.

Expedition Fit - Cut roomier than the Arc'teryx Athletic fit and suitable for winter/extreme conditions, Expedition (XPD) fit garments are cut larger to accommodate multiple layers without binding or restricting movement.

• You can find the fit type and additional fit info for Arc'teryx styles in the product description FEATURES and SPECIFICATIONS.

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Rated 5 out of 5 by from I am in love with this Jacket!! Well where do I begin. First off the fit is quite large. I am 6'2" 200lbs and I am wearing the medium in this. I can easily layer under it as well. I have used this jacket for 20 degree (Canadian Celsius ehh) rainstorms backpacking, -40 layered up snowshoeing, and everything in between. Breathes perfectly and always stays dry. Longer length is great it does not ride up your back with a pack on like some others do. Comes about half way down my as*. HUGE pit zips when needed. Articulated hood is great and can adjust to fit head and helmet no problem. I will buy this jacket over and over again! Arcteryx is amazing to deal with and the fit is perfect.
Date published: 2013-08-09
Rated 5 out of 5 by from Versatile and Bombproof Hardshell The main reason I bought this jacket is because of it's versatility. I have used it for hiking, backpacking, ice climbing, mountaineering, and snowboarding and I have nothing but good things to say about it. The extra length on the Theta is great as it covers your butt and the jacket is reinforced with the heavier Gore-tex in key wear areas like the butt, shoulders, hips, and elbows. ,,,,I think the Theta is the #1 best all-around jacket for multi-sport activities and even everyday wear as a rain-shell. ,,,,As for fit, I am 6'4" 215lbs, athletically built, and I bought a large. The jacket does run a little big, but the large is perfect for throwing over my base and mid layers.
Date published: 2014-10-19
Rated 5 out of 5 by from Best 4 season jacket Hola,,,,,I've had this jacket for about a year so far and I absolutely love the performance and look of the theta AR. I use this hard shell for every season in the Colorado Rockies, from summer trekking to powder days at Vail. This jacket is the most versatile weapon in my arsenal, there nothing this jacket can't do. I feel that the breath ability has improved drastically over the years, it doesn't breath as good as a Neoshell, but it's pretty dam close. The only time I don't use the jacket is when its over 65 degrees. The jacket is tailored more towards a taller athletic build and the sizing runs about normal. If your looking for a versatile jacket that will also look good around town, then the Arcteryx Theta Ar is your main choice.,,sizing,,6'4,,200lb,,Theta AR XL
Date published: 2014-07-29
Rated 3 out of 5 by from Great jacket, let down only by noisy fabric The Theta is noisy. It rustles with every move – think cheap plastic raincoat! I guess this isn’t a problem in the wilderness; in fact, it’ll probably keep bears at bay, if bears are a problem in your neck of the woods, although where I live there are only Koala Bears, which aren’t known for their savagery. But forget about sneaking up on wildlife in this jacket – save that for the NeoShell, or Event even. I don’t know why Arcteryx chose this outer fabric – maybe it’s bullet proof, but I have everything from U.S. army Gore-Tex, to the latest Polartec NeoShell and nothing rustles like this. And it is the outer fabric we are talking about – the Gore-Tex is only a membrane sandwiched between fabrics. Now, with the noisy fabric issue out of the way, what do I like about this jacket? Everything else! The quality is top notch. The design is spot on and I love the long cut. It looks stylish and has loads of pockets. If it wasn’t for the noisy fabric I would award it 10/10.
Date published: 2014-11-26
Rated 5 out of 5 by from Best shell ever! I was issued the Arcteryx Leaf version of this cold weather system. It's the best water repelling shell on the market, and it's form fitting. It's got cooling vents under the arms. If you're summer hiking you can wear it all by itself and stay cool if you're really putting out.
Date published: 2016-05-18
Rated 5 out of 5 by from Stay dry! Wore this in NZ hiking all day in constant downpour. I was the only one at the shelter whose rain gear did not fail. Lots of envious looks.
Date published: 2015-08-14
Rated 5 out of 5 by from Everything they say is true Bit the bullet and took advantage of a good sale at Moosejaw. This is the highest quality shell I've ever worn. Durable, light, wind/water proof and nothing unnecessary in it. I recently wore it on a snowshoe trip and also skiing. Layered up great with my Thorium down jacket. Sizing chart says I should be a medium but I listened to the reviewers and got one size down and it fits perfectly.
Date published: 2016-02-07
Rated 5 out of 5 by from Awesome! This was the first Arcteryx product I finally decided to get after reading reviews on jackets for a year or so. It is an amazing jacket. It is very versatile. I have used it backpacking and I also use it as a winter shell. Whenever it rains, I have to run outside now with this jacket on. I have used it for about a year now and it shows no signs of wear.
Date published: 2014-12-29
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I moved freshly cut cedar logs while wearing this jacket and it is now stained with cedar sap.  Anyone know how to remove these stains?

Asked by: Moser317
Hey there, Thanks for reaching out to us! Have you tried hand sanitizer or rubbing alcohol? Apply a small amount of either one, moisten a soft cloth and blot the sap. If the sap is thick or the area is large, pour the cleaner directly onto the sappy area and work it in with your fingers. Launder the clothing as usual with regular laundry detergent and warm water. Prior to placing the piece in the dryer, check to ensure all of the sap was removed. If any sap remains, repeat the above procedures. I hope this helps you out of your sticky situation!
Answered by: Rocko Gigsby
Date published: 2016-05-18
  • 2016-05-26T14:35CST
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