Free 2-Day Shipping on Orders Over $50

Detail Images

  • Arc'teryx - On-Model Front
  • Arc'teryx - Detail
  • Arc'teryx - Detail
  • Arc'teryx - Detail
  • Arc'teryx - Detail
  • Arc'teryx - On-Model Back
  • Arc'teryx - Theta AR Jacket - Men's - Admiral
  • Arc'teryx - Theta AR Jacket - Men's - Black
  • Arc'teryx - Theta AR Jacket - Men's - Dark Moss
  • Arc'teryx - On-Model Front -
  • Arc'teryx - Detail -
  • Arc'teryx - Detail -
  • Arc'teryx - Detail -
  • Arc'teryx - Detail -
  • Arc'teryx - On-Model Back -

Current Color

  • Arc'teryx - Theta AR Jacket - Men's - Admiral
  • Arc'teryx - Theta AR Jacket - Men's - Black
  • Arc'teryx - Theta AR Jacket - Men's - Dark Moss

Arc'teryx Theta AR Jacket - Men's

sale $437.50 - $625.00

Free 2-Day shipping on orders over $50. Learn More

Select a Size:

Select options
  • Select options
    • S
    • M
    • L
    • XL

    Select a Color:

    Select options
  • Select options
    • Admiral
    • Black
    • Dark Moss
    4.5536

    36 Reviews

    Details

    Your one-jacket quiver.

    A one-stop-wonder for adventures in the mountains, the Arc'teryx Men's Theta AR Jacket is designed for multi-sport versatility. With a Gore-Tex membrane, fully sealed seams, and water-tight zippers, this jacket keeps bone dry though downpour and snowstorm alike, while articulated sleeves and ergonomic patterning in the fabric won't restrict your movements on the ski hill or ice wall. Breathable Gore-Tex fabric and underarm vents prevent overheating while you're active, and the slim cut keeps bulk from getting in your way.

    The Theta AR offers many of the same features as its brother, the Beta AR, but is cut longer (hitting at the thigh) to offer extra protection when it's really coming down.  Reinforced in hard-wear areas like the shoulders and arms with N80p-X nylon, it can handle pack straps and ice encounters, while the pockets are strategically placed out of the way of an equipped climbing harness and the hood easily fits over climbing or ski helmets.

    • Technical shell for mountain adventures and inclement weather
    • Gore-Tex Pro offers waterproof and breathable performance
    • e3D Ergonomic patterning provides comfort and mobility
    • Articulated arms and gusseted pits offer climbing manuverabilty
    • Underarm vents let you cool off during high levels of activity
    • Reinforced patches on sleeves, shoulders, and hips enhance longevity
    • Adjustable hood, hem, and cuffs seal out the snow and bitter wind
    • Pockets placed strategically for easy access under your harness
    • Item #ARC00RY

    Tech Specs

    Material
    [membrane/laminate] Gore-Tex Pro (3-layer), [face fabric] 40D nylon, DWR finish, [reinforcements] 80D nylon
    Seams
    fully sealed
    Fit
    regular
    Length
    below hip
    Center Back Length
    32in
    Hood
    attached, helmet compatible
    Pockets
    [exterior] 2 zippered chest, 1 zippered sleeve, [interior] 1 zippered mesh
    Venting
    underarm zips
    Claimed Weight
    1lb 1.1oz
    Recommended Use
    backcountry skiing, backpacking, hiking, ice climbing
    Manufacturer Warranty
    lifetime

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    All Around Protection

    • Familiarity: I've used it several times
    • Fit: True to size

    The Theta AR is aptly named as it offers all around protection from any element in any condition. I wear it both in the city as it has a sleek simple aesthetic as well as on the mountain skiing. It breathes very well and I can trust it to prevent any precipitation from getting through.

    Protection from any weather

    • Familiarity: I've used it several times
    • Fit: Runs large
    • Size Bought: Medium
    • Height: 6'1"
    • Weight: 180lbs

    This jacket is so tough. I'm pretty sure I could take a shower while wearing it and not get wet. I have not had a chance to ski backcountry with this, which is why I purchased it, but so far it has worked great for resort skiing paired with my Patagonia Down Sweater as an insulator. I am 6'1" 180 lbs and bought the Medium. it is a little tight when layering underneath, but the Large was huge on me. The length is perfect for skiing

    GREAT JACKET!

    • Familiarity: I've used it several times

    I have many jackets from this company, they hit it out of the park with this coat, great fit and finish love the longer torso length , you can adjust and cinch it tighter, plenty of room for a layer underneath great product spent 6 hours in the rain and stayed dry.

    A Jacket you can depend on!!!

    • Familiarity: I've put it through the wringer
    • Fit: True to size
    • Size Bought: Large in Cardinal
    • Height: 5'9"
    • Weight: 180lbs

    This jacket is PERFECT! I originally was going to get the Alpha SV because it has a high denier fabric and is made in Canada, but after trying on the Theta AR I fell in love! It has a more roomy cut which allows you to layer and put a radio chest harness under the jacket (I'm on search and rescue). This thing sheds water like a plastic sheet and breaths like your favorite mid layer. I get complements on the jacket all the time too!

    I freaking love this jacket

    • Familiarity: I've put it through the wringer
    • Fit: True to size
    • Size Bought: Small
    • Height: 5'10"
    • Weight: 135lbs

    Bought this jacket 3 months ago and I can tell it's going to be the one that I measure all others by. I have used it primarily skiing and snowboarding (with a few snowshoe trips) but also plan on using it on a Mt. Rainier summit climb in 6 months. This winter has been particularly cold on the slopes in the Pacific NW so I have been wearing it over a Patagonia Nano Puff layer with a mid layer fleece and baselayer underneath. Despite all those layers it never feels constrained or tight nor does it feel baggy if I lose the Nano Puff layer. The Goretex Pro 3L is borderline magical as it juggles protection, breathability, flexibility and toughness perfectly. I have snagged it on all kinds of gnarlies weaving through the trees without any hint of wear so far. I like the thigh length and don't miss the lack of powder skirt at all as it cinches at the bottom.

    Good, but missing chest pockets

    • Familiarity: I've put it through the wringer
    • Fit: True to size
    • Size Bought: L
    • Height: 6'4"
    • Weight: 180lbs

    Owned for 2 years.

    I bought this to replace a Mountain Hardwear shell I used regularly for basecamp-style expeditions located in areas that hover just above freezing temps. I wear it over a bulky wool sweater without restriction of movement. It becomes a little tight under the armpits if there are too many layers (base+mid+bulky sweater).

    Overall, a good jacket, but I miss having a chest pocket that can be accessed easily when wearing a climbing harness. (recommended uses includes climbing...), therefore the 3 stars

    Best Jacket i Own

    • Familiarity: I've put it through the wringer

    I love everything about this jacket, from the bomber material to the light weight design(yes there are lighter jackets) but for what you get it is really hard to complain about weight with this thing. I love the added length on the jacket for real storm protection and the versatility is unparalleled.

    Just Rad!!!

    • Familiarity: I've put it through the wringer
    • Height: 5'10"
    • Weight: 185lbs

    The versatility of this jacket is incredible. I needed something that would keep me dry on an alpine climb, giving me lots of movement in my shoulders and arms, without being too bulky. This jacket fits nicely, allows for some layering, and you can stand underneath a hose and you'd still be dry. It doesn't get in the way of a climb, while allowing free range of motion. It's super light, so it's a no-brainer when packing for variable conditions.

    Great jacket for BIG guys!

    • Familiarity: I've used it once or twice and have initial impressions
    • Fit: Runs large
    • Size Bought: XXL
    • Height: 6'5"
    • Weight: 250lbs

    Well, I think this settles it... I'm 6'5" and wear a 48 x-long in a formal suit jacket for the chest and shoulders. So, when I ordered this off of another reviewer's opinion of this jacket being a little on the large size, I jumped at the chance to buy it. I can wear a MH Phantom puffy underneath this shell and the Theta AR still has room for more, if need be. Cannot wait to take this mountaineering this coming season!

    No room for layering

    • Familiarity: I returned this product before using it
    • Fit: Runs large
    • Size Bought: Medium
    • Height: 6'00"
    • Weight: 180lbs

    This is a fabulous jacket and I really wanted to keep it. However, it is cut so trim in that you can't have much layering under the jacket. I needed a jacket that was versatile enough to go 3-1/2 seasons when I need the extra room for layering, so back it went.
    I'm a true large (6'0", 180 lbs) and the medium fit me well with just a shirt or light layer beneath.

    Light, breathable, solid.

    • Familiarity: I've used it several times
    • Fit: True to size

    Got this at the tail end of winter and worn it a few times. I'm a gear junkie and own (or have owned) several gore membrane and waterproof breathable jackets (patagucci, Marmot, Simms, Marker, TNF, cloudveil[yeah--some of my favs] etc.,). I added this to the gear closet hoping for triple duty--ski days, packable travel and fly fishing...oh and just general foul weather moving about. Its fit is NOT athletic fit like some of the AT stuff. I've got enough room for a down puffy easily under this. There's no powder skirt or superfluous pockets. It does have pit zips to dump heat fast. I've worn it this past week for bike commuting--the length (longer) is great for bent over cycling and the sleeve also has a little extra length--nice if you're biking or have long arms in general--fit fine regardless. The length will undoubtedly be an annoyance for foul weather deep wading when fishing, but being a shell, not a big deal to dunk the lower foot of jacket in water with all my other layers inside the waders. The 'hand warmer pockets' are high--to get the entire pocket above a backpack waistbelt. I got the green as I wanted a different color than most of my other shells--it'll be great for NOT standing out streamside. Owning some other pro shell gear, I suspect the waterproof breathability to be on par with the best stuff out their. 3-layers of durability so I'm anticipating an ability to take some basic abuse. It'll pack down to almost nothing for travel. I like the subtle AT logo...reminds me of my fav Cloudveil back in the day (I'm not paying to be a walking billboard). This is a well done jacket with no superfluous features. I know this is the going rate for pro shell jackets...and if it had a powder skirt and/or multiple internal pockets I'd be looking elsewhere. But I struggle to give 5 stars to a jacket that eclipses 6 bills with the tax-man factored in that doesn't completely blow me away. This is a really, really good shell with none of the extra stuff I didn't want anyway.

    Best of the best

    • Familiarity: I've used it several times
    • Fit: True to size

    I love this piece. Clocking in under a pound, you can't ask for more when it comes to weight, durability, and performance in a 3L Gore-Tex Pro shell. I dare you to try and get wet, cause it's not going to happen! The Theta AR is one of the longer fitting cuts in the Arc'teryx line. I primarily use this piece for snowboarding and days around town. If you're looking for something more climbing oriented, this piece probably isn't the one for you, but Arc'teryx has plenty of other hard shells that will fit much closer and not be in the way of your climbing harness. One thing I wish this had was a powder skirt, but sometimes you have to sacrifice something to save weight. In the photo I posted I am standing on the right

    Best of the best

    Great Technical Shell

      I gifted this to my father and he LOVES it! He's 160, 5'8" and a medium fits him a little big, but has room for lots of layers. Stone blue color is beautiful! A little more washed out/ gray than the picture, but I like it more like that.

      Nice, but better AR coats for the money

      • Familiarity: I've used it once or twice and have initial impressions
      • Fit: True to size
      • Size Bought: medium
      • Height: 5'9"
      • Weight: 182lbs

      I'm a designer and gearhead who tried on a buttload of coats in an effort to find a jacket I could snowboard in, and walk around the city in comfortably. Love this coats trim fit and long length, gore pro.. this coat is a simple piece of perfection. The tightness and consistency of Arc'teryx's stitching and seams can't be beat by any other company out there. HOWEVER, the jacket doesn't have enough features / details to make you really blown away. You then try on the Marmot Alpinist 70D jacket, and instantly will become extremely upset at how expensive the theta AR is, and how little it offers in comparison. I love the Arc brand and what the quality of the things they create..... but you then ask yourself, where's my Zip off powder skirt... you notice there's only 3 main pockets on the jacket, (only 1 on the inside)... you notice the lazy piece of rope you have to pull to open any of the zippers... it's like the more details you look at, the more upset you become, until you're frustrated you dropped $600+. The Marmot Alpinist answers all of the problems, with an even better gore text outer. This coat is great if you just wanna wear Arc'teryx and feel like the man, but they need to step up the design.

      HELPFUL HINT TO PICKING OUT COATS:
      Almost every coat has a DWR coating, which isn't made like it was years ago due to EPA. So, at the end of the day, all these coats DWR will wear off, and all you'll have left is is the core features of the coat. Buy a coat based on its build quality, durability, and FEATURES.

      Nice Hardshell

      • Familiarity: I've used it several times
      • Fit: True to size
      • Size Bought: XL
      • Height: 6'0"
      • Weight: 210lbs

      I was looking for a hardshell for layering on alpine climbs. I am happy with the quality and durability of this jacket. The attention to detail in design and manufacture is excellent. The jacket is quite tough and light. Very happy. Keep in mind, the fit is trim. I am 6.0" 210 lbs and take a 46 sport coat. I got an XL, but it is quite trim . . . I'm happy with the fit, but on summits, my down parka goes over the top of this jacket.

      came with hole in back

      • Familiarity: I returned this product before using it
      • Fit: True to size
      • Size Bought: medium
      • Height: 6'1"
      • Weight: 170lbs

      This jacket seems great. The quality is very nice and the long cut is sweet too. I am 6 feet 170 with around a 41 inch chest and the medium fits great. I am kinda in between sizes (M and L) for other arcteryx jackets but this fits nice in medium. I can't speak to the performance because unfortunately the one I bought came with a small little hole in the back (nighthawk color). It was not available and then one came available all of a sudden in my size so I picked it up. Mysteriously I see this jacket again now available in the same size and color the same day my return was processed....Kinda sketchy. I have never once had a single problem with a backcountry purchase ( I have made far too many) but this was kinda disappointing. Luckily I was able to return it.

      High quality

      • Familiarity: I gave it as a gift but have feedback to share
      • Fit: Runs large

      This is a very nice jacket, if features a 3 layer Gore Tex shell that will keep out everything. This jacket will keep you dry in a torrential downpour or in the biggest snow storm of a lifetime. Gore Tex is a proven technology that never ceases to impress. With it's breath ability it will insure that you don't get clammy inside your shell jacket. I like it so much I will probably get another.

      Theta AR vs Beta AR Sizing

      • Familiarity: I've used it once or twice and have initial impressions
      • Fit: Runs large
      • Size Bought: Medium
      • Height: 5'9"
      • Weight: 175lbs

      I've been searching for a new shell for hiking, climbing, and most of all, skiing (backcountry and lifts). I spent tons of time reading reviews before dropping some serious coinage on a shell. I'm 5'9 175 lbs, athletic build, 33" sleeve, 40" chest, and I'm somewhere in between a large and a medium in everything.

      I figured large was the way to go for layering, but I was afraid I'd be swimming in the Theta, so I opted for the Beta in large instead. Whoops. Don't get me wrong... the Beta is a beautiful shell, but I had wayyy to much room in the chest/shoulders while the length was definitely too short for skiing. I promptly returned it and purchased a Theta in medium. YES!

      I'm amping to get this thing outdoors. The fit of the Theta is perfect! It's not too baggie without layers, but I can comfortably fit a base layer and Atom AR under it. I can squeeze a fleece under the Atom AR if necessary, but things start getting a little cramped at that point. I love the sleeve pocket, and the pocket placement will accommodate a pack nicely. The length is spot on, but not too long to stop me from using this while climbing/hiking.

      Maybe I'll report back in a couple months about how the Theta holds up, but from everything I've read, this thing's bombproof. But if you're trying to figure out the fit, definitely size down...even if you're layering. And average height guys, don't worry about the length. Its perfect unless you're picking this up for around town. But no one here does that, right?

      bomber protection

      • Familiarity: I've put it through the wringer
      • Fit: True to size
      • Size Bought: medium
      • Height: 5'10"
      • Weight: 180lbs

      I've had a Theta AR for 8 years now. The first lasted 7 years of hard 6-month-per-year use until the hem came unglued. Arc'Teryx replaced it for free with a brand new one.

      The size and cut are great. I'm 5'10" and a fairly athletic 180lbs (climber shoulders, cyclist legs) and this fits me perfectly. I can layer a wool base layer and size medium Atom LT under it with no problem, and squeeze a thick fleece under the Atom for sub-zero days.

      It clears climbing/biking helmets, harnesses and backpacks without any annoyances, though it's long enough to cover gear loops up and that you need to rearrange it a bit around a bike saddle. Small price to pay for how well it covers you. It seals out EVERYTHING on a really cold day, but still breathes great with the vents open.

      As with every arc'teryx jacket I've tried, what really shines are all the little details. Everything is superb, right where you want it to be, easy to operate one-handed with gloves on and feels like it'll last a lifetime.

      tl;dr: you'll never find yourself saying "I wish this jacket..." because it's perfect.