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Stretch on the sides, warmth in the middle.

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.

  • Coreloft 60 insulation at arms, torso
  • Polartec Power Stretch at side panels, underarms
  • DWR finish
  • Tinthan 100% nylon
  • Trim fit

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Here's what others have to say...


Too short!

    I love everything about this jacket except for the length! I am on the shorter side (5'4) and I still find it too short. Such a huge shame! Because otherwise it is perfect as a jacket for between seasons.



    • Familiarity:I've put it through the wringer
    • Fit:True to size
    • Height: 5'4"
      Weight: 120 lbs
      Size Purchased: Medium

    My wife has one of these and she loves it. The material is made out of dragon skin because she beats this to shit and has never had a rip or tear in the material.

    Insulation: its that perfect mid layer fill! keeps you warm!
    Fit: its going to be close to your body to keep you warm.

    Pro: Durable, Warm, and Lifetime Warranty

    Cons: she wished she would have gotten the one with the hood.


    Warm enough for a spring m'cycle ride!

    • Familiarity:I've put it through the wringer
    • Fit:True to size
    • Height: 5'7"
      Weight: 135 lbs
      Size Purchased: small

    That's 5'-7" Katie in a size small Atom LT jacket. We rode my motorcycle to a walk around Ada Hayden Lake in Ames, Iowa and the Atom LT held back the morning's 26 deg wind chill temp. We both think the Atom LT is a great jacket (I've had mine for over 4 years). It's warm and lightweight and just feels great. With its athletic/trim cut, it looks great too. Highly recommended.

    Warm enough for a spring m'cycle ride!

    Patina Teal is Darker in Real Life

    • Familiarity:I gave it as a gift but have feedback to share
    • Fit:True to size

    The Patina Teal is a darker teal in real life. It's much more green-tinted. I gave this as a gift to the winter runner in our family, and she loves it! Although the color is not as pictured, she still loved the color.