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  • Arc'teryx - Proton LT Hooded Insulated Jacket - Men's - Graphite

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  • Arc'teryx - Proton LT Hooded Insulated Jacket - Men's - Graphite

Arc'teryx Proton LT Hooded Insulated Jacket - Men's

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    • Graphite

    7 Reviews


    The essential particle.

    While carrying a jacket for every kind of weather you might encounter may appeal to your inner gear geek, it's a whole lot easier to carry one layer that will handle just about any inclement weather you face in the high mountains. The Arc'teryx Men's Proton LT Hooded Insulated Jacket puts versatility at the top of its strengths with a breathable and weather-resistant softshell face and water-resistant Coreloft synthetic insulation. Arc'teryx's Fortius Air 40 fabric is air permeable to prevent overheating while you're on the move, but resistant to wind, water, and snow when clouds gather over your objective. Coreloft insulation adds lightweight warmth that is quick to dry, whether it gets wet with sweat or snow. Arc'teryx gave the Proton a climbing-specific design with a trim fit to reduce needless bulk, articulated arms and gusseted elbows for climbing mobility, and a hood that fits comfortably over a climbing helmet.
    • An insulating layer adept at climbing rock, ice, and alpine granite
    • Coreloft insulation is lightweight, compressible, and quick-to-dry
    • Softshell is air permeable and resistant to water, wear, and wind
    • Arc'teryx NU treatment repels water, oil, and stains
    • Stretch knit cuffs lock in warmth
    • Adjustable drop back hem for added coverage
    • Gussted underarms and articulated elbows allow full range of motion
    • Trim fit ideal for climbing and hiking
    • Item #ARC00KT

    Tech Specs

    Fortius Air 40 (92% nylon, 8% elastane), DWR treatment
    65g Coreloft Continuous
    Center Back Length
    29.1 in
    2 zippered hand, 1 zippered chest
    Claimed Weight
    14.8 oz
    Recommended Use
    alpine & expedition, climbing
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Arcteryx sizing has changed

    • Fit: Runs small
    • Size Bought: Large
    • Height: 6'3"
    • Weight: 185lbs

    I used to love Arcteryx because it had a more European fit, and for someone with my build it fit perfectly. I'm 6' 3", 185 lbs with long arms, and I could consistently buy Arcteryx XL and have a perfect trim fit. Now, Arcteryx has gone the way of Patagonia, sizing larger and larger for American chub on the waist. Now almost anything in XL fits in the shoulders and arms but is baggy and sloppy in the torso. If I order Large the sleeves are too short and the waistline rides too high. Therefore I pretty much can't buy Arcteryx anymore. Bummer because I have loved and worn the brand for a long time.

    I have the opposite problem. I'm 6'2 185 and Large used to fit perfectly on me, but it seems like Arc'teryx went with the extreme trim fit lately and I can no longer wear large. When I try XL it feels better in the back, but is way too baggy in the front, which makes it unwearable. They need an in-between size for tall people with wide backs but narrow waists.

    pretty much perfect...

    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: Large
    • Height: 5'11"
    • Weight: 185lbs

    I think this is what every breathable, insulated "one tool option" jacket has been reaching for. I first saw this jacket in person at the Arc'teryx store, where the evil, manipulative staff casually suggested that i try one on and go walk around outside, where it was about 30 degrees. With just a baselayer, i was perfectly comfortable... So, obviously i had to have one. Winters in the Rocky Mountains have taught me how to dress -- i know that if i put on a jacket and go outside, and i feel like i'm wearing a space-suit (like w/ Gore-Tex), it usually feels great at first, then i either overheat, or just slowly build up condensation, meaning that i end up wet and freezing, which can get dangerous. The Proton LT doesn't use any type of VBL or vapor barrier membrane, so it stays cool and dry - not "warm". It gets compared to the Atom Lt, but this is really a next-gen garment. There isn't fleece under the arms like the Atom LT, nor is there an uninsulated panel like the Atom SV. Insulation under the arms? You bet. Another thing that amazes me is how this can feel so substantial - the shell feels a little like the flight/ bomber military jackets, only softer. The inside feels almost exactly like the Pat. Nano-Air, which in my opinion would be the Proton's most direct competitor. It doesn't have that "old sweatshirt" comfort of the NanoAir, but it also doesn't have that old sweatshirt appearance. The lack of any kind of baffles or through-stitching makes for a clean, non-puffy look that is attractive and functional. It seems to be as "breathable" (don't attempt to inhale this product) as my Nano-Air, but with significantly more wind protection. It's not as stretchy as the Nano-Air, but it does stretch, and the way it's cut makes it fit so well that it's rare that i have to do something that demands some stretch - but when you need it, the elastane is there ;-) Because of its ricockulous temperature comfort range (50+ ºF), i haven't needed more than a light baselayer down to about 20ºF, but if i move inside to ~70ºF, i stay cool and dry. I haven't tried wearing on 80º days, but i'm wearing it as i write this and i feel the same as i just did walking around the park in 22ºF ("feels like" 11ºF) with blowing snow & wind. I find that amazing. Plus, i LOVE the Graphite color. For those interested, it would make a great urban tactical outer layer, or breathable mid-layer for extreme cold. Best insulated jacket i have ever seen...

    Fit Review

    • Fit: Runs small
    • Size Bought: Medium
    • Height: 5'10"
    • Weight: 175lbs

    40" chest
    32-33" waist

    I didn't buy this, but tried it on at the local Arcteryx store in Boston while shopping for a new shell. I have an Atom LT, so I'll compare it directly to that.

    Fabric: Seems more durable than the Atom, and more closely resembles the Gamma series in overall feel, which I prefer.

    Fit: It feels trimmer overall, and is most noticeable in the waist and arm holes. The waist is fine for me, and had enough room for a t-shirt and wool baselayer. I have larger shoulders, and the arm holes felt restrictive in the pit area. I can't tell if it's fabric build-up, or needs more room in the arm hole/chest , but I found it uncomfortable, and wouldn't like it for everyday wear.

    Open up the pit area a bit, and I'd probably take the Proton over the Atom.

    Best All Around Jacket I've Owned

      I just put 5 Patagonia mid layer jackets on eBay & I'm buying another Proton as soon as they sell! I went ice climbing on a bluebird day that started windy and in the teens and peaked at 37 (F) and I didn't have a breathable layer. I bought the Proton LT before heading out and it performed amazingly ALL DAY long! That was two weeks ago and I haven't taken it off since... The best part is no static shock like all my Nano PUFF & NP Airs EVERY TIME I took them off. 6' 205lbs the L was climbing comfortable but I went with the XL for all around comfort 5 Stars +++

      Best All Around Jacket I've Owned

      So So So great

      • Familiarity: I've put it through the wringer
      • Fit: True to size
      • Height: 6'0"
      • Weight: 165lbs

      I also have the Atom LT and love that jacket. But the extra water and wind resistance in this jacket is fantastic keeps me toasty as a stand alone jackets even when temps drop into the teens. Its practical in the backcountry, but also casual and sharp looking in town. Super happy with this jacket and definitely digging the external chest pocket for all my extra chapsticks.

      Warmth in Any Weather

      • Familiarity: I've used it several times
      • Fit: True to size
      • Size Bought: Medium
      • Height: 5'11"
      • Weight: 165lbs

      Whether you're waiting your turn on the crag, chasing face shots on a powder day, or if you're simply trying to look good on a Friday night, the Arc'teryx Proton is perfect for any activity.
      It provides enough warmth to make an amazing outer layer on brisk spring or fall days and an even better mid layer on colder days, while you're riding the lift up to get that perfect line.

      Insulated jacket for any activity

      • Familiarity: I've used it several times
      • Fit: True to size
      • Size Bought: Large
      • Height: 6'2"
      • Weight: 185lbs

      The Arcteryx Proton LT Hoody is a super breathable and dynamic insulated jacket that excels when you're getting active. It's a great outer layer for hike in the fall, and as soon as the temps drop, throw a shell over it, and you'll find that it's not too bulky, and allows your body to breathe while staying warm. The fit is trim, so it can layer easily - if you like a more generous fit, you may want to consider sizing-up. I am 6'2" 185 and the Large is great for me.

      Unanswered Question

      Compare to Patagonia Nano-Air hoody or jacket which feels more durable with outer material?

      I can not decide between jackets. Thx.