Arc'teryxAtom LT Hooded Insulated Jacket - Men's

Never leave home without it.

Who needs a multi-tool when you've got the Arc'teryx Men's Atom LT Hooded Insulated Jacket? Well, you don't—though, you might want to bring one along anyway (just in case). More specifically, the designers over at Arc'teryx made the Atom LT versatile enough to handle year-round mountain adventures ranging from climbing to skiing.

The Atom LT is constructed with a durable, breathable, and lightweight Tyono exterior, while the DWR treatment fends off light rainfall—meaning you stay relatively dry no matter what Mother Nature throws your way. To bolster its adaptability, the Atom LT is equipped with gusseted underarms and Polartec Power Stretch side panels to ensure an unimpeded range of motion whether you're wearing it as a midlayer or an external shell. Perhaps most importantly, though, is the Atom LT's synthetic Coreloft insulation. This synthetic insulation not only retains warmth in wet weather, but also offers maximum thermal efficiency without compromising the compressibility of the fibers. A StormHood slides over helmets with ease, and the adjustable hem provides a personalized, snug fit should you desire it.

  • A versatile, highly adaptive jacket for all aerobic activities
  • Tyono exterior is durable and wind-resistant for protection
  • DWR treatment sheds light moisture easily
  • Coreloft insulation keeps you warm even when wet
  • Stretch side panels promote unobstructed mobility
  • Articulated elbows and gusseted underarm bolster comfort
  • Helmet-compatible hood is insulated for added warmth
  • Adjustable hem provides a personalized fit and feel
  • Reviews
  • Q & A

Arc'teryx – Men's Atom LT Hoody

This trim hybrid hoody is designed as an active-use insulation layer, providing vital core warmth with liberal mobility and breathability. Lightweight and compressible, the Atom LT Hoody features Coreloft™ insulation in the torso, arms and hood. The side panels and underarms feature Polartec® Power Stretch® with Hardface® Technology, delivering stretch mobility and breathability. A wind and moisture resistant outer shell extends stand-alone usability. Fact: Every person at Head Office owns at least one Atom LT; most of the women have two.

The reason: Coreloft™ insulation inside a light taffeta shell. All the comfort of a sleeping bag, but it feels weightless.

Perfect jacket for Winter

I wore this jacket for 12 days in Utah and the perfect for hiking, climbing and dining.

Perfect jacket for Winter
Unanswered Question

Height: 6'
Weight: 170 lbs
I want it to be fit, should I can an M or L?

Climbing Ishinca

Wore the Atom LT the all the way up and down. All i had to do was open the jacket a bit to regulate my body temp.

Climbing Ishinca

Arc'teryx – Men's Atom LT Hoody

This trim hybrid hoody is designed as an active-use insulation layer, providing vital core warmth with liberal mobility and breathability. Lightweight and compressible, the Atom LT Hoody features Coreloft™ insulation in the torso, arms and hood. The side panels and underarms feature Polartec® Power Stretch® with Hardface® Technology, delivering stretch mobility and breathability. A wind and moisture resistant outer shell extends stand-alone usability.



Fact: Every person at Head Office owns at least one Atom LT; most of the women have two.

The reason: Coreloft™ insulation inside a light taffeta shell. All the comfort of a sleeping bag, but it feels weightless.

Pika Glacier Denali NP

Crevice rescue practice is warm work in cold places. Atom LT hoody is perfect to regulate temperature.

Pika Glacier Denali NP

SoCal Weather

This jacket is great for everyday insulation for various types of weather and I chose this over the Atom AR because I felt it would be more flexible with the warmer temperatures in SoCal. I must admit though I was expecting it to be warmer for colder climates when I went to the mountains that reached to ~28 degrees Fahrenheit - I had to wear a warm fleece to keep myself comfortable. But for regular outings like camping, climbing, or just out in the town there is no better jacket out there!

SoCal Weather

Has anyone had any problems with the zipper? I haven't worn it yet but just pulling the jacket open when it's half zipped, tends to unzip really easy.

Just concerned of it unzipping easily while doing things.

It's designed to be easily opened using one hand, without the other having to hold the other side. I know what you mean, but I really like how smoothly it opens. It shouldn't be sliding down on it's own, though.

My heigh is 5'5", should I go for the xs or small one? I also wanted to know how long is the jacket (is it hip length or like in the mid thigh)?

I am the same height and 135 lbs athletic build, size small is a perfect fit for me, it is hip length

Unsure about what size I should get...I am 6'0 170lbs with a slim/athletic build. I want to be able to wear a fleece jacket underneath this, so I was thinking a large, but I am not sure...

I'm built similar to you (6'1" 175lbs) and sport a medium in this jacket and would not be able to fit a light 100wt fleece under this comfortably. You would probably be better suited with a large if heavy layering will be used. It's a tad slimmer than say a similar Patagonia sized jacket, but works great with a long sleeve shirt or thermal. I love this jacket for it's weight to warmth ratio you will not be disappointed...

I agree with Philip, go Large in the Atom LT if you want to layer a fleece underneath. I am 6'1" 185 lbs and have this jacket in Large so feel free to shoot me any additional questions directly.



Kyle

Expert Gearhead

klivingston@backcountry.com

801-736-4337

Hiking in Albania

Kept me warm as we hiked along the Mediterranean Sea. Very durable despite its thin material and deceptively warm when doing any sort of activity.

Hiking in Albania

Atom LT kept me warm in Ireland!

Description

Atom LT kept me warm in Ireland!

How well does the hood fit when not wearing a helmet?

Best Answer

Hey Matthew, I've never worn a helmet with mine and have had no issues with the hood. I do not own the newest version of the Atom LT, so my hood doesn't even have any adjustments. Considering my experience and how you can now adjust the hood, I'm confident you won't have any problems.

I have to disagree. Arcteryx needs major work on the adjustment system of the hood. When you cinch the hood, it looks like your head is the shape of a mushroom.

The Atom LT Taking In The North Rim

I bought my first Atom LT in Courmayeur while walking Tour du Mont Blanc. I loved it so much I bought another when I returned home.

The Atom LT Taking In The North Rim

Man, I'm getting one for IN the canyon next month!

I am trying to decide between the hood or no hood. Definitely plan to use it under my shell for skiing which is where the hood could be annoying. But for other things where I use it as an outer layer (belaying mostly and/or hiking) the hood may be nice. Is the hood annoying under a coat or is it not too bad?

Best Answer

I have the hooded version and use it as a midlayer under my shell for skiing, it doesn't bother me. I can tuck the hood into the shell hood and I don't even notice it. The hood is definitely worth having, especially on a cold night to keep your head and face warm.

Hi, I'm 181 cm / 73kg / 95 cm chest.

Would you recommend a Medium or a Small?

The chest measurement is the best to go off of when picking out jackets. The small will actually be a perfect fit for you if you want to wear the jacket the way it was intended to be worn which is athletic or slightly tighter for people climbing in it. If you want a much more relaxed fit then the medium is an option but, I feel that it would be way to big as the small chest measurement fits best for people at 97cm.



If you have anymore questions feel free to send me an email or call!



Bill Porreca

bporreca@backcountry.com

801-736-6398

Atom LT Hooded Insulated Jacket

Is there a jacket similar to this but more waterproof? Open to other brands. thanks!

With the DWR treatment this tends to shed rain about as well as a softshell. If you're looking for full waterproofing you'll probably want to look to a hardshell. If you're looking for light versatile layers I like the Patagonia Alpine Houdini as something to get on quick when the wet gets insistent.

I agree Alan! I think a jacket like this pairs perfectly with the Alpine Houdini, or Beta SL if you wanted to stay within the Arcteryx brand.

I am 5'10 and 175 with an athletic build - what size would you recommend? Thanks!

I'm 5'10" 185lbs and like my XL. I have large shoulders and find the XL allows full range of movement without binding or feeling loose/bulky. I typically layer it over a wool base layer.

Its like wearing a sleeping bag!

Its like wearing a sleeping bag!