Back to School '14Back to School '14

Description

Get your heart rate up without overheating or getting clammy.

How often does a super-lightweight puffy jacket incorporate breathable stretch panels under the arms? About as often as unicorns dance the hula in hobbit colonies. Thankfully, Arc’teryx Men’s Atom LT Insulated Jacket really does exist and it really does combine the rad, rare combo of insulation and breathability where you need it—creating just the right thing for aerobic activity on really cold days.
  • Synthetic Coreloft insulation is bonded to a resilient, water-resistant face fabric, while a smooth inner lining glides over your base layer
  • Polartec Power Stretch panels under the arms lets perspiration evaporate away … no mugginess
  • Stretchy cuffs seal cold air out of your sleeves
  • A fitted stand-up collar slips under your shell jacket without bunching up
  • Weighing in at just 300 grams, this jacket won’t bog you down on long ski tours, cold hikes, or mountaineering trips
  • Layer under a hardshell in wet conditions

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Arc'teryx Atom LT Insulated Jacket - Men's

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Here's what others have to say...

How roomy is the jackets fit? I intend to...

Posted on

How roomy is the jackets fit? I intend to layer it over a shell as a "micro belay sweater" in milder weather.

Responded on

Not sure if that's the best use here. It is sized to fit under a shell as a layering piece or a mild weather stand alone. You could check the Atom SV, but size up. Or are you really just the Laughing Man?

Inside View - Side Venting/Different Material

Inside View - Side Venting/Different Material

Posted on

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...

Outside View - Side Venting/Different Material

Outside View - Side Venting/Different Material

Posted on

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...

Anyone know if the Atom LT and SV are cut...

Posted on

Anyone know if the Atom LT and SV are cut to layer over each other? Like if I bought large in both would they work worn together, or should I go a size up on the SV?

Responded on

The two articles aren't really meant to be layered over one another. The LT and SV refer to the materials and cut of each. The LT is lighter and cut shorter with less durable material whereas the SV is longer, a bit heavier, and made with a more durable fabric.

5 5

Throw out your heavy fleece

After only 1 winter season of use, I can say this baby is a must for those who don't want the cold to keep them indoors. The best way for me to describe this is as a replacement for your old heavyweight fleece (think TNF Denali jacket) in terms of insulation. It will heat you up plenty during aerobic exercise, but isn't designed to keep you warm whilst sitting still in sub-freezing temps.

My usage: I took this snowshoeing in VT, Colorado, and the Adirondacks, NY in a mix of wind, snow, and sun. Under a hard shell in the snow and wind, this was perfect at keeping me warm and dry, and once the pit-zips were open, allowed me to dump good heat when the sun came out. I also used this on a ski sojourn, and it also performed admirably, though once the sun went down I got a little nippy on the chair lift (only had a merino baselayer on under it) I warmed up to just-right temps once I started coming down the mountain.

All in all, this is a great, lightweight alternative to a beefy fleece, and due to packability, will accompany me on my backpacking journeys in the 'Dacks this summer for fire-less High Peaks night chills.

5 5

Warm, lightweight, great fit

This jacket is everything it's advertised to be. Warm, compact, lightweight and water resistant. I wore this nearly every day during my 7-day trek up Mt Kilimanjaro and another 4-day trek up Mt Kenya. It "plays well" with base layers (it slides easy) and also does really well in strong wind. It has an athletic fit which allows it to be easily layered underneath an outer shell and also makes it a pretty cool jacket for wearing around town. The external material also has the added benefit of being easy to wash in the field.
Although I originally thought it was overpriced, I've found it to be worth every dollar. Its pretty much my go-to jacket now as long as it's not pouring rain.

Warm, lightweight, great fit

what size? 5'7'' 145lbs. be layered over...

Posted on

what size? 5'7'' 145lbs. be layered over a tau pullover and under a sidewinder ar...thanks

Responded on

Steelheade,

I was about your exact size when I got my first Arcteryx, and I went too small. Get at least a medium, if not a large if you want some additional breathing room. Arcteryx fits their gear very slim. The key will be fitting the sidewinder over everything, so you should think about getting it in a larger size than your other layers (for example, medium pullover and insulating layer and large for the shell). Especially with shells, consider whether or not you or the amount of gear you'll be wearing will might change in the foreseeable future before you write it off as 'too baggy.'

As always, if you're not happy with the size you got, backcountry.com has great customer service and should accept prompt returns on sizing issues.

Happy trails!

Responded on

Wow, you're going to be warm! Normally a small would be best, but if you are layering under the Atom, a medium will accommodate this.

3 5

Not that warm

The synthetic fills seem to have replaced fleece as a mid-layer for skiers - down, primaloft, coreloft, whatever. I've tried them all and I still find fleece the best. I wore the Atom LT skiing at 15 degrees and I was cold. I switched to a 200 weight fleece jacket that I paid $60 for and warmed right up!!

Responded on

The idea with these jackets is they are much more versatile than fleece. You can wear it alone and it blocks wind and light moisture. Also packs down about half the size of a fleece. These also layer much better due to the smooth face fabric. No binding under your shell...

Responded on

Agreed but what good is "versatility" if I'm cold? If you want a smooth face get a Hyllus - that's a fantastic, warm midlayer. The Atom is fine but based on my own experience it's not as warm as advertised. I will certainly wear it when the temps rise.

Which shell works best with a medium Atom...

Posted on

Which shell works best with a medium Atom LT? The Alpha or the Beta in a size medium. Are both shells the same length with the alpha just longer in the back? Just want to make sure that the shell covers the Atom

Responded on

Any of the Arc'teryx shell jackets will cover the Atom. The Alpha SV does have more of a drop tail than the Beta AR.

5 5

Functional Perfection

I bought this jacket as an alternative to a heavier fleece jacket for mid-layer piece. It's:

- Lightweight: I sometimes forget I'm wearing it, and it adds practically no weight to your pack.
- Warm: Keeps me warm under my shell into the high teens when simply walking around, and into the single digits during activity.
- Breathable: While it's a very warm jacket, I can wear it during massive temperature and activity fluctuations because it vents very well. I wear in my office at work and I never overheats at room temp.
- Packable: The coreloft insulation is almost as packable as down. The jacket easily disappears in my pack.
- Doesn't restrict movement: Not one bit, and its better than heavy fleece in that regard given the design.
- Bomber face material: Sheds snow and light rain. It also blocks wind well. Seems durable for it's weight and it doesn't bind to the fleece liner in my softshell.
- Sized as a layer piece: It's true to size, and fit's well under my shell. It doesn't allow for too many layers underneath, but I can fit a lightweight fleece vest underneath if it's really frigid.
- Great build: Stitching is tight and even. Zipper is smooth and fluid. The cuffs may stretch over time if you are aggressive with them but I'm not concerned with it.

I don't have anything bad to say about this jacket - it's highly functional and has a great build for it's weight. I'll definitely be buying another one when my current needs replacing.

Responded on

Nothing is perfect. "Bomber" face material? Warm "into the single digits"? No way.

Responded on

You'll certainly have to be pretty active to be warm into single digit temps, but that assumes you're using this as a layering piece, which perhaps I should have made clearer. I've been ice climbing in single digits with a decent base layer underneath and a soft-shell on top, and I was nearly sweating. Once you stop, you'll definitely want something with more insulation, but while you're moving it does a great job of trapping in heat while being breathable.

For a jacket of this weight, the face material is great. It keeps wet snow out and I've yet to have it tear. It's pretty tough while being compressible.

Responded on

Jack, while I might not agree with the face materiel being 'Bomber' in terms of durability, I can say myself I wear this jacket in the low teens or single digits without much problem, as long as the wind is not whipping in my face. Even then, adding a backlava or hat solves that, and I donnt put on my Beta AR unless it's really crappy outside.

Can anyone describe the differences between...

Posted on

Can anyone describe the differences between the hooded and non-hooded versions of this jacket, other than the hood? Do both jackets drop down to the hips? Thanks!

Best Answer Responded on

The non Hooded version has a bit of a shorter cut, and the collar does not come up as high. Other than that they are the same.
Great jackets BTW!

5 5

Light, Warm & Windproof

I originally bought this as a midlayer but after my first trial run using it in winter it is now my outer layer of choice replacing my trusty Karimoor polartec fleece jacket.

+ Its WARM. The warmth to weight ratio of the Atom is amazing. It was 3°C and I had a T-shirt and a light merino sweater and my Atom. My hands were cold but they warmed up after I stuck them into the blessedly warm side pockets. (I had to buy gloves later in the day)
+ Its WINDPROOF The wind was blindingly strong but I didnt feel it under the Atom.
+ Inner chest pocket for iPod and other stuff ( I put my camera, cigarretes and the iPhone in )

The main reason this is now my cold weather jacket of choice was
1. It is ridiculously light
2. It is very packable ( it compressed into something smaller than a beanie )

5 5

One NICE jacket!

I got this jacket to get something a little warmer than the Venta LT and what a great jacket! Lightweight and warmth and the side panel vent like the Venta. I was a little worried about getting a "slim" jacket and it is a little tighter than their athletic version, but, not nearly as much as I had feared. Best part is the my Stingray shell fits over it. Like it was made for it! Now if it would only snow......

5 5

One NICE jacket!

I got this jacket to get something a little warmer than the Venta LT and what a great jacket! Lightweight and warmth and the side panel vent like the Venta. I was a little worried about getting a "slim" jacket and it is a little tighter than their athletic version, but, not nearly as much as I had feared. Best part is the my Stingray shell fits over it. Like it was made for it! Now if it would only snow......

Will you get the black in medium back in...

Posted on

Will you get the black in medium back in stock?

Responded on

Yes, we are expecting a few more. Looks like it will be about a week from now, but keep checking back.

5 5

Stevo

Bought this jacket to use as a base layer for a backpacking trip in the Lee Metacalf Wilderness in Montana. Camped around 9500' for a few days. Temps were easily in the mid 30s at night. Only had to wear a shrt sleeve underneath and stayed warm. Never had to break out the hard shell to add warmth. I was very suprised at the weght to warmth ratio. Be aware that the jacket is cut very slim and is designed to use as a base so you will not be able to wear much underneath. Not a problem though. Great Jacket!

How does PrimaLoft One compare to Coreloft?...

Posted on

How does PrimaLoft One compare to Coreloft? I've read other posts that had the following information that came directly from Arc'teryx.

"Coreloft is a fabric that we have made for us. It's similar to Primaloft, but we have tweaked a few things to try to get better performance. Core Loft is constructed of a double strand of continuous polyester filaments. The finer yarns (1 denier) are "crimped" to help trap air molecules which in turn help trap body heat while the larger yarns (3.5 Denier) provide loft and resilience from compression. The fibers are siliconized to help add resistance to moisture and decrease drying time."

Does anyone have any first had experience with Coreloft to share? PrimaLoft One garments tend to have great "hand" and feel very soft. Unlike say, PrimaLoft Eco, which is heavier and less supple, etc. How does the "hand" or feel of a garment that has Coreloft compare with a PrimaLoft One garment?

Best Answer Responded on

I've had an Atom LT hoody for about 4 months, and it's really soft and supple. Also, super packable. I stuffed mine into a small ammo can for cool times on the Colorado river, and still had room for camera, snacks, sunscreen and a couple other essentials. It's about half the size of an equivalently warm fleece, but with some weather resistance. the cuffs are super comfy and low profile. I noticed that it tends to breathe better than other light synthetic insulators I've used, and I think this is the Coreloft and face fabric combo.

Is it supposed to cover my butt? I tried...

Posted on

Is it supposed to cover my butt? I tried on two different size, one was tight on my chest but the rest fit great, felt perfect as a mid layer. I tried a size up, chest area was very comfy but felt some material was bunched up on the waist line (I tried under the Alpha LT).

Best Answer Responded on

Wasabi, greetings and thanks for your question. The Atom LT jacket is a technical insulating layer that should be fitted in the body in order to best layer under a shell. This jacket will work equally as well as a stand alone piece to combat the cold. It does not feature a drop tail, and is not supposed to cover your a@!. If you are looking for an Arcteryx insulator with a drop tail, check the Fission Series, Kappa SV, or the Dually Belay Jacket. I hope this is helpful for you. Enjoy.

5 5

living in this in Santiago and portillo

I have been in Chile for two weeks and have been living in this jacket. love it.

living in this in Santiago and portillo
5 5

Extremely light and warm

I bought this jacket about 6 months ago in preparation for an overseas trip. Packing space was at a premium and I had spoken with some folks who sell the LEAF line and they had nothing but good things to say. One of my favorite jackets as a base layer over a t-shirt while working out, or I pair it with the BETA LT and I am completely covered for rain / wind / cold. This jacket packs extremely well and is highly compressible.

Responded on

Will you get the black in medium back in stock?

View all contributions... Be patient, it might take a while.