Minimalist mobility for the mountains.

Focused on fast and light climbing, the Arc'teryx Men's Acto FL Jacket combines abrasion-resistance and breathability in a lightweight package so you can move efficiently and comfortably in alpine environments. Aerius Grid Loft fabric offers exceptional breathability to allow air flow and ventilate excess sweat when you're exerting yourself, and it's tough enough to withstand frequent encounters with rough rocks. The bonded fleece lining adds a touch of warmth on crisp days at the crag and wicks heat-robbing sweat from your skin. A DWR finish keeps sleet and spindrift off your back, and gusseted underarms ensure you can reach tough holds and swing ice axes freely.

  • Light and warm softshell for fast and light climbing
  • Aerius Grid Loft fabric is breathable and abrasion-resistant
  • Fleece backer traps heat and manages moisture
  • DWR finish repels light rain and snow
  • Trim fit maximizes performance and makes it easy to layer
  • Gusseted underarms allow unrestricted mobility
  • Hemlock prevents jacket from slipping from under harness
  • High pockets can be accessed with pack or harness on
  • Reviews
  • Q & A

Best Soft Shell Out There

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: Large

Purchased this jacket about a year ago and have put it to the test in Alaska. I mostly used the jacket for ice climbing and back country skiing where a lightweight, durable, and flexible jacket is key. I love the big chest pockets which fit small skins and the Hemlock feature on the waste is an awesome addition for ice climbers and anyone spending time on glaciers. The jacket breaths well and is surprisingly waterproof for winter applications. The lowest temperature I've worn this jacket is -20F with a light puffy underneath.

Best Soft Shell Out There

Acto FL v. Gamma LT v. Epsilon LT

  • Familiarity: I've used it several times
  • Fit: True to size
  • Size Bought: Large

So i never had a chance to try the old Acto MX, but my two favorite jackets over the past 5 years or so have been the Gamma LT and Epsilon LT, so when i had the chance to pick up the new Acto FL second-hand but new, i just had to jump. So here are some initial impressions...
I just stepped out to run an errand, and it's in the 40s (ºF) with 25mph gusts, making it rather chilly, even in the sun. As soon as i stepped out in the Acto FL and a baselayer, i realized this wasn't going to work. The wind blows through this jacket almost like a typical hard-face fleece, like the Fortrez or Lorum, (Polartec Powerstretch). I swapped it out for the Epsilon LT, and problem solved. Most manufacturers would call the Acto a softshell, especially considering that the outer layer is mostly nylon, meaning it should be very abrasion-resistant. The Epsilon LT, which is also called a [EDIT: I'm sorry - my review was deleted somehow. I will work on a re-write. My apologies]