Arc'teryx Atom LT Jacket

2 reviews
5-star:   1
4-star:   1
3-star:   0
2-star:   0
1-star:   0


Sizes XS, S, M, L, XL
Weight 292 g / 10.3 oz
Fit Athletic fit, Hip Length
Materials Polartec® Power Stretch® with Hardface® Technology, Luminara™—Nylon weave fabric with wind and water repellant coating, 60 gm / sq m Coreloft™ insulation



This jacket is so worth the $$! It is warm enough…

Rating: rated 5 of 5 stars
Price Paid: $165

This jacket is so worth the $$! It is warm enough to wear in the 30s, yet you won't overheat in the 50s. There are three things that I must rave about this jacket:

  1. The handwarmer pockets. Genius. The interior of the jacket is made of material that heats up when your body does, so your body heats up one side of the pocket and the other is fleece. Best handwarmer pockets I've encountered.
  2. The breathable Polartec Powerstretch side panels. They are why this jacket is so versatile. While it really does heat up (esp under a shell), these help it breathe and regulate your temperature. Added bonus: they make you look thinner!
  3. The fit. It is a tapered fit and is incredibly flattering. You can certainly fit layers underneath it, but it is snug.

Now for the other great features: beautiful color, awesome wrist gaiters, very light weight, and feels so comfortable.

As long as you use this jacket for what it is intended for, you should not be let down. Just remember it is a mid layer jacket, not a full on winter coat. It doesn't really block wind either.


I have had this jacket for 3 months- it is great!

Rating: rated 4.5 of 5 stars
Price Paid: 180 euros

I have had this jacket for 3 months- it is great!

It is warm AND breathable. For downhill skiing and sledding in -5 to -15C, I paired the jacket with a goretex shell, a fleece+thermal shirt underneath. Warm!

For cross country skiing in -10C weather (definitely a high-impact activity), I wore 2 synthetic layers underneath and was warm enough without getting overly sweaty and wet.

For going around town, I just wear as it is!

It fits well. Body fitting, such that you don't look like a marshmellow man, but still enough room underneath for a fleece or other thin layers. The cuffs are made of elasticized material that stops the sleeves from sliding down, even with raised arms. I also love the bright blue colour.

It is light! Like crazy light... How does something that is so small insulate so well? But it does! I like the feeling of not wearing a jacket while wearing a jacket.

My only two suggestions would be to 1. add a drawstring to the bottom hem and 2. raise the under chin cuff by 1 cm (when wearing alone, too much of my neck exposed).

I have the hoodless-version and it fits well under a shell.

rated 4.50 of 5 stars All Atom LT Jacket versions

In addition to the 2 women's reviews above, there are 5 reviews for other versions of the Atom LT Jacket. Read all reviews »

Where to Buy

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Manufacturer's Description

Visit Arc'teryx's Atom LT Jacket page.

Retailers' Descriptions

Here's what other sites are saying:

Insulated, mid-layer jacket with wind and moisture resistant outer shell Ideal as a layering piece for cold weather activities. Ideal for ambitious days when the mercury plummets, this warm mid-layer features composite materials that provide balanced warmth and breathability. The arms and torso are fortified with Coreloft insulation, and the side panels and underarms incorporate Polartec Power Stretch with Hardface Technology to increase mobility and breathability. A wind and moisture resistant outer shell extends stand-alone usability.

- Ramsey Outdoor

The Arc'teryx Atom LT Jacket is ideal for ambitious days when the mercury plummets, this warm midlayer features composite materials that balance warmth and breathability. The arms and torso are fortified with Coreloft insulation, and the side panels and underarms incorporate Polartec Power Stretch with Hardface technology for superb mobility and breathability.


The Arc'teryx Atom LT Jacket is an ideal midlayer. Perfect for long days on the mountain or quick summit attempts, this synthetically insulated jacket compresses down to almost nothing and stays warm even when wet! Moisture-resistant outer face fabric Breathable Insulated Lightweight Compressible and packable Wind resistant DWR finish (Durable Water Repellent) helps bead water from fabric surface Composite materials Breathable, stretch side panels for enhanced comfort and mobility Articulated elbows Gusseted underarms Soft brushed-lined collar Full front zip with wind flap Stretch-knit cuffs Drop back hem Laminated hem Internal chest pocket Two hand pockets

- OMCgear

The Arc'teryx Women's Atom LT Jacket is the skinniest full-jacket member of the Arc'teryx Atom family, but don't let the sleek profile fool you. The Atom LT packs a wallop of warmth when mid-winter marathon training finds you outside pounding snow-packed pavement in Minot, North Dakota. And thanks to its trim fit, this slick little number also works well under a shell when the weather dictates more hardy protection. Coreloft 60 insulation leans towards the lighter side of the Coreloft cabal, and does not cover every inch of your upper body. Deliberate design puts the insulation where it matters most: your core, arms, and shoulders. Along the jacket's sides and under your arms, you'll find Polartec Power Stretch with Hardface technology. This four-way stretch fabric accommodates your every move, and Hardface technology ups the ante on abrasion resistance. The non-insulated panels also help the jacket breathe so you don't become the steaming carne asada inside a toasty synthetic insulation burrito. As with all members of the Atom family, the Atom LT can be shoved into its own sleeve for packing efficiency and economy of size when space is a premium. The DWR coating fortifies the water-repelling aspect of the shell fabric, while the air-permeable polyurethane layer enhances the shell's wind resistance. Articulated elbows and underarm gussets give your arms free range of motion whether you're dancing in the firelight or fighting for the final pitch. From dawn patrols to winter running to shoveling the driveway after a late March dump--whatever your preferred poison, the Atom LT will keep you warm through the bitter end.