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  • Arc'teryx - Atom LT Hooded Insulated Jacket - Men's -

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

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85 Reviews


The Arc'teryx multi-tasker.

Arc'teryx designed the Atom LT Hooded Insulation Jacket to perform double-duty as both a lightweight jacket on cool days and a toasty insulated mid-layer on days when Mother Nature is in one of her moods and you need serious protection.
  • DWR-coated nylon shell is wind- and water-resistant
  • Coreloft insulation is lightweight, compressible, and warm
  • Scuba hood can be worn under a helmet for next-to-skin protection
  • Polartec Powerstretch panels under the arms for unlimited range of motion
  • Item #ARC1189

Tech Specs

[body] Luminara (20D nylon ripstop), DWR coating, [underam side panels] Polartec Power Stretch with HardFace Technology (88% polyester, 12% spandex)
[torso, arms, hood] 60g Coreloft
Fabric Waterproof Rating
yes, under-helmet
Center Back Length
29.75 in
[external] 2 zippered hand, [internal] 1 zippered chest
Claimed Weight
[M] 13.2 oz
Recommended Use
layering, cold weather exploration
Manufacturer Warranty

Tech Specs

  • Reviews
  • Q & A

What do you think about this product?

Have questions about this product?

My best friend through think and thin.

    My Atom LT hoody has been my best friend for years now. From Denali NP to Siberia, across Colorado & Utah this has been a constant companion. It still has its loft and warmth. The cuffs are still snug in my wrists, packs down into the hood to form a small ball about the size of a Nalgene. Always get the hood.

    My best friend through think and thin.

    Great Jacket!

    • Familiarity: I've put it through the wringer
    • Fit: True to size

    I must say this is the lightest and most versatile jacket I own. You can dress it up or down. Very lightweight and warm, even in heavy winds it seems to knock the chill off. I've only worn this in a slight drizzle But don't think I would take it out in a down pour. Fits perfect to size, I'm 6'0 210 and the XL is great, with plenty of movement. Can't say enough about this jacket.

    Awesome jacket!!!

    • Familiarity: I've put it through the wringer
    • Fit: True to size

    I had to admit I was a little worried when I got my jacket for it is very light and thin. I bought it to go skiing to Stratton, VT last January, 2014.

    The day was terrible outside, 5 F , very windy and snowing but we still went out to sky (or try at least).

    I wore a thermal underwear, a mid layer fleece and my Atom LT. It was perfect, I did not get cold at any time neither wet and it was the same next day when we went snowshoeing .

    I love this jacket, the S size fits me great and I am a 5'7", 150 Lbs. who likes to wear fit/tailored clothes.

    I totally recommend this product.

    Good but not great

    • Familiarity: I've put it through the wringer
    • Fit: True to size

    A very popular jacket, obviously, given all the reviews here. I've used this jacket quite a bit recently, but only for hiking and not climbing with a helmet. I've found the size of the hood to be very irritating, to the point that I will replace this as soon as I can find something better. Maybe it'll be the next version of this jacket or a different brand altogether.

    I'd also like for Arc'teryx to tone down the branding. The logo on the chest is almost comically large. The Aphix hoody that Arc'teryx makes seems to have gotten it right but currently it does not have hood adjustments either.

    It really quite baffling that Arc'teryx could not see this would be an issue so I question their testing procedures.

    The jacket is good, although not particularly special. It's pretty basic which is kind of what I'm looking for, but I need the basics to be correct.

    Stephen, before I wrote my review I did check Arc'tery's website and how they classify this jacket just to make sure I didn't unjustifiably criticize the jacket. I think it's common for people to buy outdoor products that are not designed for what they are using it for. This is particularly common with Arc'teryx. There cannot be that many people doing alpine climbing, for example :-)

    Anyway, Arc'teryx put the Atom LT in the "Arc'Teryx Essentials" group which they describe as "highly versatile performance products". Further more, they specifically state the jacket is designed for the following activities: Ski/Snowboard / Ice Climbing / Alpine Climbing / Hiking / Trekking.

    So, there's a mismatch here. You don't wear a helmet when hiking or trekking. In fact, perhaps this is an example that you cannot design for all of these things successfully or you may end up compromising on all of them.

    I feel Arc'teryx overpromise and under-deliver with this jacket.

    I'm aware of the jacket but an insulated hood is great to have.

    The takeaway is this: Unless you plan using a helmet this jacket may not be for you.

    one of my favorites

    • Familiarity: I've put it through the wringer
    • Fit: True to size

    I alternate this jacket with my Mammut down coat depending on the cold chill. This jacket is, hands down, the most versatile piece that I own. It is great for wearing around town, skiing, and layering if needed. It adds just enough warmth without making you boil wants the activities start. It is also ridiculously lite weight and stuffs easily into a bag or pack.

    Fit is true to size. I would say it is more standard fit vs the typical Arcteryx athletic trim fit. I am 5'11'' 185lbs and a medium is perfect.

    I first purchased the one without the hood and quickly opted to exchange. Definitely worth the cash. If you don't already have one, you should.

    Great versatility - excellent quality!

    • Familiarity: I've put it through the wringer
    • Fit: True to size

    Purchased this jacket in the Fall. Used it all season for snowboarding from the first day (11/30/13) to the last? (4/27/14) Comfortable over a HUGE temperature range. Really impressed with the Coreloft insulation! Wore it as a stand-alone jacket on spring days, and under a shell on the bitter cold days! Pockets are just right - inside pocket holds your phone, outside pockets large enough for snacks, tools, etc. Cuff design is excellent - simple design that seals out the cold, and slides easily under a shell. Long enough to cover your tail when bending over to buckle in, yet still a nice trim fit. Dries in no time. Stuffs small in your pack at the end of the day! I own(ed)similar pieces from Patagonia, TNF, others, but this is by far my favorite. Worth the money - great colors too!

    Perfect mid-layer for the lifts

    • Familiarity: I've put it through the wringer
    • Fit: Runs small

    My Atom has become the jacket that I wear almost every day. Comfortable, lightweight, and warm. For me it's fine as a stand-alone jacket except in the dead of winter. In my opinion it packs relatively small considering it's not down. The hood could use a cinch for when you're not wearing a helmet, but when I'm wearing my climbing or snowboard helmet it fits great, especially under the cinched hood of my hardshell. I'm typically size L (I have a Large Alpha SV) but the sleeves and waist were a little short so I went with the XL. The fabric is thin and doesn't last long against sparks, so don't be stupid like me and wear it around a campfire!

    Very very close to perfect

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

    This is a great, almost perfect, mid layer for very cold temps, or a good outer jacket during spring/fall. I come from using a minimal down sweater almost daily except during the height of summer. In Spring or Fall this jacket works great as an outer jacket. The breathing side panels do make a difference compared to the down sweater I was wearing, the Atom being less clammy feeling. Together with the less 'sticky' outer fabric this just makes me that little bit more comfortable.

    Had some mild rain and DWR works great for now. Main reason for synthetic for me is it will be easier to wear under a shell and not worry about it getting compressed or wet as much as with a ultra light high fill power down shirt.

    I'm 184cm and 72Kg (6.1/160) and I'm often in between a Medium and Large due to broad shoulders. Got a Medium and it fits great. If you want to layer a lot under it, or you like a looser fit, you would probably like a Large.

    I have a Atom SV (also Medium) and the two are sized to be worn together (the LT with the tighter fit, the SV looser) so no need to adjust sizing if you are thinking about going that route.

    The hood is not as bad for me as for some other people. I've been in stormy winds twice and although the hood wasn't shut tight and let in air, it did stay securely on my head. I feel a cinch cord in a newer model would be well worth the weight though and really make the Atom LT 100% perfect for me. The hood on the Atom SV is perfectly adjustable with the cinch cords on the sides and in the back.

    The remarks about the cuffs are not exaggerated. It's a sign of good design when you get something you never knew you needed. Arc'teryx is expensive but their attention to detail, their fabrics, and their cut (the fit) is the best there is.

    I'm about the same size. 6'1" 160. Even among clothes that are supposedly designed for active people, it's tough finding upper body wear that's long enough, but doesn't look like a tent in the waist area. Do you find the sleeves plenty long enough in the Medium?


    • Familiarity: I've used it once or twice and have initial impressions
    • Fit: True to size

    Great jacket. Everything has already been said about the features. 5'11" 170lbs and I wear a large. The medium felt too tight for me around my neck and too short in the front. If I was getting this jacket solely for the technical aspect the medium might have been a better choice, but for me it will be used for around town also. Call me vein or self conscious, but it's kind of lame when your mother asks if you are wearing your wife's jacket because of the fit.

    Packs tight

    In a recent mountain hiking trip where I started at a point where temps were around 74-F and ended at below 50-F I carried this jacket packed in the pouch it comes with. As such it is about the size of a Nalgene liter bottle. It is light so it didn't bounce much as attached by a small belt on my Lowepro camera belt bag. Carrying it that way makes it instantly ready for when I need it and I didn't have to dig in my pack for it. At night when it was close to freezing I wore only a shirt over a thermal top under this jacket and that's what wore to sleep in a tropical grade sleeping bag.

    (Btw, this is my second review. I'm the guy who sew the edges of the hood so it fits more neatly over my head.)

    Packs tight

    Great Mid Layer, great fit w/Beta AR

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

    I tried out several mid layer options by Arc'teryx including the Nuclei and Atom SV, neither was a good fit. The Atom LT is extremely light and a great mid layer that I wear over a fleece on colder days.

    Best light insulated jacket ever!

    • Familiarity: I've put it through the wringer
    • Fit: True to size

    one of my favorite jackets - use it all the time! Perfect fit, really light and packable, comes with a bomber DWR treatment that lasted over a year, so nice fit that you don't notice you have it on. Really good breathing when used as a middle layer under a shell.

    Great jacket, hood too big though

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

    I own at least 18 pieces of jackets/shells accumulated over time and this is my third Arcteryx coat (with a fourth one on the way; I have an eye for quality, an expensive vice I must admit). It quickly became my favorite for its fit, light weight, and especially packability. It is flexible all-around as I can mix and match with just about any sweater or even down jackets in my closet to be warmer if needed. I can put a shell on if it gets too wet.

    One complaint is that the hood is too big for my head and "de-hood" easily when in use especially when it is windy. So I pinched the hood opening by about and inch on both sides by sewing the edges as you see in the picture. It is a solution that works for me quite well. It took some effort, but because of that I like this jacket more.

    Great jacket, hood too big though

    Top of ITS CLASS

    • Familiarity: I've put it through the wringer
    • Fit: True to size

    Hands down the best lightweight, packable, jacket I own. If you are looking for a great lightweight jacket to face windy elements or a rainy Vancouver or Seattle spring...don't look any further.

    So far my favorite jacket I own.

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

    The atom lt is a great jacket just read all the reviews. I am a small guy at 5'5" and 120 pounds. I would really like them to make it in an extra small for hobbits like me. But it is a great jacket and the small still fit well.

    A warm cloud

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

    I bought this jacket to wear as a stand alone piece for spring and fall climbing. When I put on this jacket I immediately felt my body heat radiating back at me. It was like slipping into a warm cloud. This jacket is incredibly light, and is easy to compress so you can always have this on you when in the outdoors. I've been out in freezing weather with just this on and a t-shirt. I wouldn't recommend it, but I stayed comfortable. I really like the slimmer fit, being a skinny guy it's nice to not have the bottom of your jacket box out like an awkward dress. The longer cut backside is sweet too, adds a little extra length to the rear so you can extend your arms above your head and put those ice axes to work without the fear of an exposed caboose. Love this jacket, I'm wearing it right now, breathes like a champ too.

    Great piece, must own

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

    This was a jacket that I avoided for a while, and I wish I hadn't. I was skeptical about the hood, and I have always been a fleece guy. This hoody completely wow'd me with how it fits, and more importantly how it performs. This jacket fits me perfectly at 6'3" I am an XL in all but Arc shells. The drop tail is great for coverage, and the hood is better than a hat in most cases... if not a little goofier looking in public. I have worn this alone over a shirt in 30 degree snow and light sleet... the DWR and face fabric are great for that, but I wouldnt want it in a rain storm. Under my Sidewinder shell this thing is a beast... makes it like an insulated jacket with the hood and all being covered. The neck zips up pretty close to my chin, so offers nice protection from the weather. I don't climb, but I use this for a skiing mid layer and general jacket for quick trips. It's not cheap, but its worth every penny and more. The colors are really sharp too this year, which was just an added bonus.

    Unanswered Question

    I have atom lt hooded 2011/2012 end I think it was bulid as athletic fit. Now I see this one updated to trim fit. I have several different jackets from Arcteryx but this one (my model from 11/12) has the shortest sleeves and is very wide at the waist. I wonder if something has changed in terms of the cut in the new version?

    BC Group-- @5'8, medium build, and ~150lb, I'm wondering if the remaining Medium will run too large on me. Sale price point is very attractive. Are you able to give an estimate, or should I go ahead and purchase/try on at home? Thanks!!

    Best Answer

    Those base specs you and I have a similar build and I would pick up a medium if I sized up. I always suggest however getting your chest and sleeve measurement to get a better idea how a jacket will fit since the lower half of your body has nothing to do with how a jacket will fit but effects your height and weight pretty drastically.

    The sleeve and chest measurements are located on the size chart (It's the blue 'Size?' link just above the quantity info).

    The measurements for a medium are 40 inches for the chest and 34 inches in the sleeve. If you want to try on the medium, email me - and I can set up the order for you and hook you up with a return label if you don't like the fit.

    I'm 6'1" 175 lbs and I could wear a medium in this jacket but a large fits me better.

    BC rep please.. I notice the Atom SV is...

    BC rep please..

    I notice the Atom SV is on sale. Wondering why you haven't put all these on sale yet since you are selling the new model now? Wouldn't these all be considered discontinued models? The arc rep said the dealers can choose whether to put on sale or not...

    I would like to know if this jacket is...

    I would like to know if this jacket is waterproof and if it can provide me enough warmth(combined with a mid layer fleece sweter).I am intend to use it in mid mountaineering expeditions and in cold weather conditions.As I will spend the next winter in Northern Europe I would like to know if it is suitable for the purposes I need it for.

    Best Answer

    Hey Aggelos,

    It looks like you just hit us up with the same question on a lot of different jackets. We really want to help you out and find you the perfect jacket for you expedition but it might be a little easier to talk with you directly so that we can discuss and compare the benefits of each jacket you are interested in rather than just spouting specs about each individually.

    Either give us a call at 1-800-409-4502 or hit that live chat button and speak with one of our experts directly.

    Does the 2014 model have the hood cinch...

    Does the 2014 model have the hood cinch cord like the LEAF series? It would be nice if BC would carry the LEAF series. Thanks.

    I haven't seen it myself, but heard from two people that went to a trade show that it would have a hood adjustment for 2014.

    I thought in the back, not on the sides but can be mistaken.

    Although I don't think the hood is as bad as a lot of people seem to do, I do think either way of hood adjustment would be a definite improvement and make this hoody perfect.

    I would honestly just get the LEAF. It is virtually the same product as the 2013 model except they have the bigger pockets and much needed hood cinch. From an aesthetic perspective, I actually like the LEAF more as it has a non-reflective logo that just kind of blends in with the rest of the black jacket. Then again, some people love the color variety. It's really your call. I have a 2014 Atom LT LEAF and I love it. I'm 6'0, 160 lbs, I got a Medium and it fits me perfectly. I can even put a nice thin fleece underneath for when it gets a little chilly out.

    has anyone compared this with the new...

    has anyone compared this with the new arcteryx nuclei? seems like that piece would be better as its both lighter and warmer (80g of Coreloft instead of 60g).

    You're totally right on that. When comparing the two the Nuclei would be the better jacket because not only is it lighter, but it also has more insulation going on with it. However the Atom does have a DWR-coated nylon shell which is a bit more wind- and water-resistant. Personally I'd still go for the Nuclei if it were me, but both are solid options!

    Hi am 175cm, weight is 167lbs. think this...

    Hi am 175cm, weight is 167lbs. think this brand is made for european and american ppl so i shld consider my size.

    usually wear jacket large size due to my bulked-up upper body.

    can i wear M size?

    Best Answer

    Hi Serok,

    The Arcteryx Atom LT jacket is designed to fit over your baselayers and act as insulating mid layer that can be worn inside, outside, or in replacement of your shell during cold weather activity. It's hard to give an exact size estimate since it will depend on how you intend to use this jacket for layering purposes in addition to needing your sleeve and chest measurements. You will likely fall in the medium category, but may find you prefer more room for your bulked-up upper body. If your chest is around 102 cm, the medium should fit well and if it is closer to 109 cm, the large will be better.

    Do you know if or when you will get the...

    Do you know if or when you will get the heron color in an xl back in stock?

    I'm 6'5, weigh 230 lbs, and have a size...

    I'm 6'5, weigh 230 lbs, and have a size 35 waist. Should I go with an XL or an XXL. I don't want the jacket to be too tight in the midsection or in my shoulders.


    Recently stood on peak wearing the Lt. The...

    Recently stood on peak wearing the Lt. The insulating material of the jacket was great and I was still hot from the climb. The cuffs kept out the hold and helped retain heat. But it felt like the hood needed a draw string and that wind was going right through the entire length of the zipper. It was only pushing 15 knots so I put on a squamish hoody and was toasty warm, but has anyone else noticed the air through the entire length of the zipper? A disappointing feature!

    Best Answer

    This jacket was intended more as a mid-layer insulation piece more than a outer shell. Due to materials, craftsmanship, design it functions as an outer layer as many people use it as such. But this thing really needs a shell of some sort (to match the conditions) over it for the very reason you raised.

    I don't think it's so much of a flaw with the piece as it was always intended as a breathable insulating layer.. But more of a case of it being used outside of it's design parameters.

    Looking to buy an atom lt for use as a...

    Looking to buy an atom lt for use as a midlayer underneath my arcteryx sabre jacket. Will it be warm enough with the use of a 260 weight base layer when its close to -25c or -13fm

    taylor, unfortunately, there is no easy answer. whether or not you're a naturally warm person and what kind of activities you'll be doing are big factors in the answer. in general, i would say this jacket would be sufficient for a high aerobic activity (cross country skiing) for some people when it's 13F below. if you were doing inbounds laps and riding the chairlift, i would say most people would end up pretty chilly. if you're looking at synthetic insulation, something like the patagonia DAS parka has twice as much insulation (120g vs. 60g) and would be better for low aerobic activities.

    I'm 5'8 like 190- Athletic build I normally...

    I'm 5'8 like 190- Athletic build I normally wear a slim fit large T shirt- I tried a large on in a local REI and it was comfy but I noticed the stomach bulge like when I bent over to tie my shoes. What may you suggest? I personally dont like swimming in my clothes but i like some room for movement and minimal stress on seams etcs.

    i believe the issue here is that you were saying this jacket has too much room in the gut, is that correct? if that's the case, i have found that patagonia down sweaters have a fairly slim fit. but, most puffy jackets are cut with some extra room for more layering options beneath. unfortunately, you really just need to try on a bunch and see what fits you best. also, know that you just may be a unique enough size that nothing will fit perfectly. i have a 42 in chest and 33 inch waist, so i usually have extra room in my jackets too.

    I'm 5'8 and weigh 140 lbs. Should I go...

    I'm 5'8 and weigh 140 lbs. Should I go with a S or a M? Thanks.

    Hey at at 193cm and 173lbs would this coat...

    Hey at at 193cm and 173lbs would this coat work best as a large or XL. I plan to use it touring and as a belay coat on chilly days?


    Arc'teryx in general have a trim fit, if you plan on using this over your other layers go up a size. I'm tall and skinny too and the larges still fit me trim across the chest and shoulders. An "expedition fit" will fit you in a large probably. they have a looser, wider fit to accommodate layers

    I'm 6'2 and weigh 207 lbs. Should I go...

    I'm 6'2 and weigh 207 lbs. Should I go with a L or an XL? It will be primarily used as a mid-layer under a size large Theta AR for skiing.

    The LT is trimmer than the AR series so you might be able to get the XL, which I would normally suggest for a guy your size, under the Large. And since its the Coraloft if it compresses a little you wont loose the insulating property as if it had been a down puffy. I honestly believe the XL is the way to go but only if the jacket you have is not already on the tighter side of things.

    Will you be getting anymore in Thalo Blue...

    Will you be getting anymore in Thalo Blue in stock...size S?

    Just wondering about size... I'm 5'7" and...

    Just wondering about size... I'm 5'7" and my chest is "thick" :) basically I'm short and solid. Would a L fit right or should I look into an XL? I just don't like jackets that sit past my belt.

    I am 190 5'11 what size should i get? is...

    I am 190 5'11 what size should i get? is the jacket suppose to fit snug or a little loose? I wore a friends he has a larg it fits good just want to make sure its not going to shrink if i wash it over time

    I'm 6'1 and 220 lbs. I got XL and its perfect for me. It is a fairly relaxed or regular fit in my opinion. If you like it snug the I would try the L.

    Recommended wash is 30 degrees celsius or low temp and hang to dry, has never shrunk/shrinked (?) when I've washed it

    I'm 6'1 and 185 and also got the XL, it fits very well, maybe a tad bit loose in the waist, but overall a nice fit. I tried the L but it was too tight in the shoulders, but I have very broad shoulders. If you have a big chest and/or shoulders, you will probably feel too restricted with the L. Get both and just return the one that doesn't work.