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  • Next-to-skin fit keeps this top as close to your skin as possible in order to aid moisture transport and help you stay warm
  • Phasic AR fabric is hydrophobic in order to help transport moisture away from your skin to the surface where it quickly evaporates
  • Phasic AR fabric uses a construction called mechanical stretch that relies on the weave of the fabric to flex, rather than elastic threads, which creates a stronger fabric with more dynamic flexibility
  • Phasic AR fabric incorporates polypropylene yarn with silver-ion encapsulated into the fibers in order to provide odor control that lasts longer than chemical coatings
  • Phasic AR fabric has a smooth outer face that's pill-resistant and an interior side that's lightly lofty for warmth

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Arc'teryx Phase AR Zip-Neck Top - Long-Sleeve - Men's

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Here's what others have to say...

5 5

Perfect Base Layer

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

Everyone hypes merino wool but this piece is now my go to base layer. It fits perfect. I am 5'11, 190 and a Large fits just right. It has a very athletic/next to skin cut. There shouldn't be any bagginess when wearing it. About the product: there is a SV Zip-Neck version and this AR Zip-Neck version. They are essentially the same product with a difference in warmth/thickness/stiffness. I wear the AR for days 65F-20F as my base layer and the SV for days 20F-0 or below as my base. It has been a year of heavy use and it still looks and feel great. Machine washable. Buying more of this product.

5 5


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

Was lucky enough to pick one up on steep and cheap. It fits well, is light but surprisingly warm, dried quick. Great for a variety of activities...running, hiking, skiing....anything u would need a base layer for. Highly recommended

5 5

Comfortable and light

This is my new favorite baselayer when it comes to snowboarding, hiking, etc. Very soft and comfortable to the touch and does a great job of regulating temperature and wicking moisture. The odor resistant claim is valid and the flexibility in the top is great. Fits true to size, I am 6'0 173lb and a large is perfect.

5 5

Awesome feel

  • Gender: Male
  • Familiarity: I've used it several times

Whether you are going on a hike trying to keep it simple, or looking for a great layering piece to go skiing and have under your down jacket and shell jacket this is the way to go. Great feel: Soft, good stretch and a nice conforming feel around your chest. I am 6'1" 170-180 and a large fits really well!