Some girls would stay inside today. But you just zip your Atom jacket under your shell and say "Let's go!'

The Arc’teryx Women’s Atom LT Jacket cranks up the thermostat when you need an insulating ski layer on an extra-chilly day. Arc’teryx’s Coreloft puffy insulation fortifies the jacket’s front, back, arms, and shoulders. And since you’ll be working up a sweat on your high-altitude ski tour, Polartec Power Stretch panels on the jacket’s sides and underarms provide excellent breathability and airflow at the sides. On days that are both frigid and snowy (you hardcore thing, you), layer a waterproof shell over this trim-fitted jacket to combine protection with insulation.

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Arc'teryx Atom LT Jacket - Women's

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Here's what others have to say...

5 5


I don't know why I keep looking at other brands when every single Arc'teryx piece I own exceeds my expectations - maybe it's because I keep looking for something cheaper, but they never seem to fit right or work as well. I bought the Atom LT jacket to use both as as an outer layer over a lightweight fleece and as a soft shell under a rain jacket. It works perfectly for both these purposes. An outer layer because it's warm enough, a soft shell because the loft shrinks when you have another layer over - it's like magic! I love the material - it's soft, very flexible and doesn't make crinkly noises. I'm 5'1, 105 lbs (on a good day) and the XS fits fine - the cuffs are tight enough so that the sleeves don't hang down or look sloppy. I'm contemplating getting the Ceva as well!

What is the difference between the Ceva...

What is the difference between the Ceva Jacket and the Atom Jacket LT? I am struggling to make a choice!

Responded on

Hey mcgp310990,

Thanks for the question. There are a few differences here and there between the Arc'teryx Atom LT Jacket and the Arc'teryx Ceva Insulated Jacket. The Atom LT has 20 grams less Coreloft insulation so it won't be as warm as the Ceva nor does it have as tough of a nylon weave. However, the Atom LT is lighter and has Polartec in the underarms for better breathability. If you are in to having a layering or outer piece for medium to high intensity activities, go with the Atom LT. Otherwise, the Ceva will work best for lower intensity and more casual situations.

2 5

XS too large for 00 petites

  • Gender: Female

I really wanted to love this jacket, I've watched the Arc'teryx videos and it seemed like the ideal wet weather midlayer (when down is not ideal). Note however that this jacket is nowhere near as warm as down. Alas, the 2012 XS size is too large for me . I am 5ft1, approx 97lb. If you watch the Arc'teryx videos you'll see that it is meant to be a fitted jacket - on me it fits like an outer layer. The stretchy side panels just hang there. There are air pockets along the torso and air gets in from the hip seam since there is no way to cinch the non-hoodie version. Also the sleeve cuffs are not as tight as on the 2011 version - so they are too long and loose on me. For the sake of comparison I'll point out that the size M, Patagonia girls down sweater fits me perfectly, but I was looking for a synthetic alternative. I so wish Arc'teryx would make an XXS size or petite sizes. If you get outdoors in California, you'll see there is no shortage of petite. outdoorswomen here.
PS: I have to thank Arc'teryx for giving orange and orangey red back to the girls! I am so fed up of purple, pink and turquoise blue. Outdoor companies please note that there are plenty of women with yellow toned skin out there and we'd like some yellow toned shades in outdoor gear.

Responded on

I am 5ft. tall & weigh 92 lbs. I am looking for a very light weight, very packable jacket for traveling - attractive, fashionable, all-pupose (not for sports), water resistant. I found the nano puff - a little large, but apparently not well made. Any suggestions?

Responded on

Gloria - alas, no great alternatives -- try the Patagonia girls down sweater size M - that fits me really well . I stuff it into a small stuff sack and that works really well. The women's sizes including for the nano-puff are too large;

5 5

Good purchase

  • Gender: Female

-Runs snug in the armpits
-Surprisingly warm for how light it is
-Will be good for travel
-I often wear this under a trench coat on cold rainy days to work to keep me warm but look professional outwardly
I would recommend this jacket! I'm 5'3'' 120lbs, and got a size small. Fits perfectly except for the snug armpits - but maybe they do that to keep it looking slim for layering. It's not so snug where it's uncomfortable - just takes getting used to.

I'm between this one and the SV but reading...

I'm between this one and the SV but reading different things about the warmth. I live in a town with severe winter weather, which would be more worth my money?

Responded on

LT stands for light, and SV stands for severe weather, so the SV would be a more appropriate purchase (it was 100g of Coreloft versus 60g in the LT), and if a jacket is cheaper, if it isn't what you need, it isn't worth what you paid. As for bang for your buck, you generally get what you pay for, but in the case of sales, they're usually the better deal.

What size should I get? I am 5'5" and 126...

What size should I get? I am 5'5" and 126 lbs

Responded on

People come in different shapes, I suggest you check out the sizing guide to compare your measurements.

4 5

Warm & Pretty Light

I've worn this jacket just a few times, and so far I've been really happy. For it's light weight and decent compressibility it seems quite warm. The jacket blocks the wind well except for the fleece side panels. Yes, they make sense to keep you from overheating, but if you're on the verge of being chilly and do not have a shell on, they are not so sweet. This jacket isn't too much bigger and heavier than something like Patagonia's Nano Puff, and seems like it's noticeably warmer, which is great for a chilly girl like me. I think this will be a great piece for layering under a shell for skiing on colder winter day, and a super insulation layer to have on your pack for any of your outdoor adventures.

I wear a medium and occasionally small in most outdoor jackets. The medium in the Atom LT is a good fit for me.

Inside View - Side Venting/Different Material

Inside View - Side Venting/Different Material

Here is a picture of the fleecy side venting material, which exists from just below the armpit (down the arm) to the waist... Its not shown in factory photos and not clear to everyone that this exists on this jacket... This is obviously the men's version jacket in the picture but I wanted to make a point to let the women know too about the venting as well...

Outside View - Side Venting/Different Material

Outside View - Side Venting/Different Material

Here is a picture of the fleecy side venting material, which exists from just below the armpit (down the arm) to the waist... Its not shown in factory photos and not clear to everyone that this exists on this jacket... This is obviously the men's version jacket in the picture but I wanted to make a point to let the women know too about the venting as well...

How does the Atom LT compare to the Epsilon...

How does the Atom LT compare to the Epsilon AR? I'm going on a 45 day sea kayaking trip next summer in Alaska and am looking for a mid-weight layer. My trip leader this year (26 days on Lake Superior) had an Atom LT, but the Epsilon AR also caught my eye...

Best Answer Responded on

Hey there, I dropped you an answer on your AR product question, which is below... One thing to note about the Atom LT is that it has this stretchy fleece material that runs from about the elbows to the waist under each arm, to help in breathing so again, it works great as a layering piece, but not really designed as a stand alone...

Hey there, the Atom LT is more specifically a layering piece and will be warmer as a layering piece then the Epsilon AR... The AR will be better as a stand alone then the LT... They are two different jackets and have been designed accordingly... SO to sum it up, if you are looking for an insulating layer that you will use, lightly, as a stand alone then go with the LT... Vice Versa, go with the AR...

Responded on

The Atom is warmer and more packable than the Epsilon, while the Epsilon offers a more durable face fabric and a touch more weather resistance. I would think the Atom would be the better piece for your trip and you'll probably end up wearing it very often.

3 5

with a bit more fill...

this would be all I'd need to separate my long undershirt and Arcteryx shell. But I did not find it to be as warm as I had hoped for an insulating layer for alpine skiing in the Northeast. Other than that, it is beautifully made & looks good on; just could use a few more ounces of fill, IMHO.

5 5


This jacket is stunning -- light, warm, perfectly fitted -- another ideal design from Arc'teryk.

5 5

Arc'teryx atom Lt jacket

I have seen Arc'teryx gear at my favorite sporting goods store for year,but never tried them. I thought they were just tooooo pricey. I got the atom Lt jacket for Christmas and am in love with it. It is THE PERFECT MID LAYER ever. It is warmer than any fleece mid layer and the fit is perfect. So when worn under an outer jacket,there is no bulk to it,but DANG IT'S WARM. The extra goodies in the jacket like the stretch material at the end of the sleeves and down the arm put to the bottom of the jacket makes moving around easy and effortless.
I am now an Arc'teryx fan FOREVER.!!!!

5 5

Atom all the way

Amazing! I received the magenta in M and it fits like a glove. SO pleased with this purchase. Nice and easy to throw on to go into town, keeps me warm when I am hiking, and I am sure it will be a great layering piece when I am up in the mountains. Lots of compliments already! You will not be disappointed.

5 5

great jacket

The fit is perfect- tailoured enough to look good when wearing on its own and to wear under a shell, but still enough room for additional layers underneath. The cuffs are also great- made from elasticized material that stops any cold air from seeping in when raising your arms.
Very warm. Down to -5C or so, I wear it around without a shell and am happy. For colder/wetter conditions, my gore tex shell comes on top. And so light! People constantly wonder how something so thin and light is warm, but somehow it is. It is nice to wear something that doesn't look or feel bulky but still be warm.
Breathability seems good, but haven't yet tested it under extreme conditions ie ice climbing. Water resistant against light rain.
I choose the non-hooded version because I planned to wear it under a shell during the winter anyway, in which case an additional hood would just be irritating. Also because I read that the hood was (unusual for arcteryx) ill-fitting.
I read that there is a drawcord on the atom lt hoody- this would be a nice improvement to the atom lt.

5 5

Great puffy jacket!

Nice puffy jacket from Arcteryx. Fit is true to size, although I wouldn't mind it being a little longer. Lightweight, but warm, and great under a shell.

5 5

Great midlayer

This is a super lightweight but cozy jacket. I pair it with the Mountain Hardwear carina jacket while skiing and its awesome. Never get cold even in 20 degree weather. I'm 5'4" 120lbs, petite build and got the XS. Its a good, snug fit over a baselayer and thin fleece shirt.

5 5

Great fit and light-weight warmth

I bought this jacket just to wear around the town although I knew it had many performance type of features. I have plenty of ugly jackets that perform when I go running but I wanted a light-weight but warm jacket that is flattering. Well, I got exactly what I wanted. It fits like gloves (xs for 5'3" & 115lb) and moves with you because of the way it's constructed. It's warm enough by itself over a decent base-layer in Boston winter (avg. ~30F during the day) if you're walking a few steps between car and indoor or if you're being active. It will also be perfect for chilly spring and fall days. It is not going to be enough if you have to stand around in the cold or if it's extremely windy. Easy to pack for travel.

Can anyone recommend a water proof shell...

Can anyone recommend a water proof shell to wear over the Atom LT for alpine skiing?

Best Answer Responded on

I'm going to assume that you are looking at Arcteyx shells. I'd start by saying that you probably want to stay away fron the Beta jackets and probably the Alpha jackets because the Armrom will probably extend out from underneath the shell (it'll be close with the Alphas) . If you
want versatility outside of skiing look at the Theta jackets. If you are looking at shells exclusively for skiing I'd look at either the sidewinder ar/sv jackets or the Scarabee jacket. The Scarabee will be the warmest since it has the high loft fleece lining. For the exact same reason, the Scarabee will be the least versatile. It really just depends on how you
want to use the shell. Any of these would be great with the Atom.

Responded on

I use a Mountain Hardwear GTX 2.5- has a gore tex performance shell+ a yeti fleece lining over the back, shoulders and neck. The model is a few seasons old, but you might be able to find one as a clearance item somewhere. It is a great jacket by itself. Good for moderately cold weather by itself, due to the presence of the fleece liner, allowing to hold a bit of extra heat and it is fantastic when really cold when paired with insulating layer such as the atom lt. It also has a great hood.

Can anyone compare this to the Hoody...

Can anyone compare this to the Hoody version? Is the cut exactly the same- plus a hood?

Responded on

both the Atom LT jacket and Hoody have the same fit in the body, with a short collar on the jacket.

Responded on

The hoody has a drawcord at the waist hem, but the non-hoody LT does not. I couldn't believe it, myself. Prefer the non-hooded but love the waist drawcord, especially when wearing under a shell.