Arc'teryx Phase AR Bottom - Men's


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The right baselayer is essential when you're in the snow; the Men's Arc'teryx Phase AR Bottoms are a mid-level base layer that wicks moisture and maintains a dry and comfortable climate so that your body doesn't waste energy working to maintain temperature. Constructed using odor-control fabric, this hydrophobic base layer doesn't require washing between every use. Mechanical stretch textile offers unrestricted mobility so that you can enjoy the outdoors to the max with the Arc'teryx Men's Phase AR Bottoms.


  • Phasic™ AR material
  • Moisture-wicking
  • Breathable
  • Durable
  • Quick-drying
  • Minimal odor retention
  • Antimicrobial, odor-control fabric treatment
  • Hydrophobic materials will not absorb water
  • Mechanical stretch textile for unrestricted mobility—fabric is inherently stretchy without the use of Spandex fibres, making it more durable
  • Anatomical shaping for fit and comfort
  • Gusseted crotch
  • Comfort waistband with laminated, soft-brushed finish
  • Non-chafing label
  • Inseam: 30 1/2" (77cm)

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Review Summary

4.2 out of 5

4 Reviews

  • Build quality: 3
  • Performance: 3
  • Great design: 2
  • great weight for warmer activity: 1

  • a little tight in the knees: 1
Quality: 4.8 / 5
Comfort: 4.2 / 5
Fit: 2.5 / 5
Warmth: 2.5 / 5

4 Ratings & Reviews

Comfort: 4 / 5
Quality: 5 / 5
Warmth: 2 / 5
from SF Bay Area
45-54 yrs

Light-weight base layer
April 26, 2011

Bought these for those warm spring skiing days in the Sierra, they fit the bill for that. I use the RHO AR pants for colder days. These take a little getting use to as the stretch is not as much as the RHO in the knees, however it doesn't seem to get baggy either which is good. Also, they are not flannel like on the inside, more of a real tight. I would put them as cooler than the RHO LT so plan accordingly, however just right for spring skiing with my un-insulated ski pants on top, and they keep my legs from feeling clammy against the snow pants. I like the fact that there is no men's fly opening in the front so if I wear them without the ski pants it doesn't look like underwear. I will be watching them to see how they last, however like most Arcteryx stuff I assume they will do great.

Pros: Great design, Build quality, Performance
Comfort: 4 / 5
Quality: 4 / 5
from southern oregon
45-54 yrs

lightweight baselayer
January 27, 2012

Fit is anatomical. They are tights. On first wear they seem well made. Good for when you're moving in cool to cold conditions. On a cold day I started to feel chilly when stopped but warmed right up once I started moving. For cold conditions and little movement get a heavier baselayer. I think they will be excellent for spring skiing. My only complaint is that they don't fit higher on the waist. After ripping through lightweight wool baselayers decided to return to synthetic to see how they compare again.

Pros: Build quality, Performance
Comfort: 4 / 5
Quality: 5 / 5
FitClothes: 2 / 5

from Atlanta, GA

Nice all around base layer
December 06, 2011

The Phase AR is not as warm as the Phase SV even though it weighs almost as much. But sometimes the SV is more than you need. The AR is softer and more comfortable fabric than the SV. It's also less bulky although neither takes up much space. Note the Phase SL is much lighter, but it is not nearly as warm as the AR. The AR bottoms felt tight, especially below the knee, but not extremely so. All of the Phasic fabrics are very fast to dry as well.

Comfort: 5 / 5
Quality: 5 / 5
FitClothes: 3 / 5
Warmth: 3 / 5
from Clarkston, MI
35-44 yrs

Great Quality that delivers
August 18, 2012

Arcteryx delivers again. This is a great mid weight base layer for your numerous outdoor activities. Even though it is light weight, it packs great warmth.

Pros: Great design, Build quality, Performance

Also Available

Arc'teryx Men's Phase AR Bottom Photo


Available sizes, while supplies last, include size small, size medium, size large, size extra large and size extra extra large: s, m, l, xl, xxl.

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