Slide on the Men's Phase SL Boxer before you pull on your ski pants, climbing shorts, or work pants, and you'll find a whole new level of comfort during intense activity. Silkweight fabric aids the transfer of sweaty moisture away from your skin, fit details include flatlock seams for comfort, and the close fit provides all the support you need—the age of the cotton boxer is over.

  • Next-to-skin fit keeps the fabric close in order to help with moisture management
  • Phasic SL fabric is highly breathable, lightweight, quick-drying, and flexible enough so you can move freely
  • Flatlocked seams eliminate uncomfortable seam bulges where two fabric panels come together and cause chafing
  • Encapsulated silver ions give the fabric the ability to repel odor-causing bacteria
  • Fabric helps repel harmful UV rays if you're out in the sun with just your skivvies on

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Arc'teryx Phase SL Boxer - Men's

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Here's what others have to say...

3 5

Can get better for the price.

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

The quality seems to be good. I've had these for over a year and they are holding up fine. However, they I still get chaffed wearing these sometimes. Even on shorter hikes. I have boxer briefs from other companies that prevent chaffing a lot more and cost less. Also there is no fly hole. Not sure why this bothers me because I don't use it but it does. For everyday these are fine but for longer trips in the backcountry I would look for something else and save a few bucks.

5 5

You can't put a price on chafe-free

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

Are these expensive? Yup. Do they lack a flyhole? Yup. Do they chafe? Nope. And that's the most important thing when you're out on the trail. Arc'Teryx has made these ultralight, yet surprisingly durable. The seams are well-stitched, and well-placed. The fabric is smooth on the inside and out to prevent friction. As an added feature, these breathe better and wick moisture better than other poly-weaves; phasic fabric doesn't just feel nice: it's superior. Add in silver-ions to fight stank and funk and you have some great skivvies here. I've used my first pair consistently in rotation for 6 months, and have decided they're great enough to purchase a second pair.

For fit: I'm 5'9", 160 lbs with a 30-32" waist and slim legs. Size small fits comfortably.

5 5

$45 and no fly hole!?

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

These are by far the nicest pair of boxers I have ever owned. I wore them 4 days in a row on the Northville-Placid Trail and they held up beautifully. They're soft, durable, quick drying, and comfortable.

With all of that being said, I do have 2 main complaints. First, the legs tend to ride up without fail. Luckily, they are so comfortable that it really doesn't bother me that much. Second, they don't have a fly hole! It may not bother some people, but if I am going to pay $45 for a pair of underwear, I expect the most basic convenience that even the $5 underwear from WalMart has. Even with all of that complaining, I will most likely be buying more pairs soon.

5 5

Best Boxers Ever!

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

I bought a couple pairs of these for my thru hike, and I have been very impressed with their performance! I could wear these things for days without having the chaffing problems I have with regular boxers. They are expensive, but when you're on day 3 of wearing them hiking 18 miles a day with a heavy pack through Virginia in the summer, you will be glad you spent the extra money!

5 5

Very Nice

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

These underwear are extremely comfortable, they don't chafe, don't smell and wick sweat very fast. Great for hiking and outdoor activities. One or two pair should be plenty for a trip. I'd definitely buy again.

4 5

Pretty nice

I have had these for about a year. I have 2 pair and wear them as often as I can, especially in the summer. The material is like no other. It is so light and soft. I can literally see my hand through the material it is so thin, but yet they seem very durable. The material looks as good as the day I bought them. Moisture wicking is fantastic, and it is the only underwear I have tried that keeps me dry even on those hot summer days. I have a pair of ExOfficio, but I haven't had the chance to test these out in the same conditions, so they may be as good. The ExOfficio material is definitely thicker and not as comfortable probably due to the texture. I also like the thinner waist band on these, and I haven't had any issues with it rolling or folding over. Although the waist band doesn't feel nearly as nice as the rest of the material. Last but not least, they cradle the goods very well, and everything feels nice and supportive without being squished. I can't imagine a better fit in this regard.

My only complaints are the price, and the material tends to loosen around the leg until they are washed again. I am 5'10", 160lbs with a 32" waist, and I have the medium. I wish they were a little snugger around the leg even straight out of the washer. Arc'teryx calls it a boxer, but the fit is really somewhere inbetween a boxer and a boxer-brief for me. A person would need some seriously large quads to fill these out. Compared to the ExOfficio boxer-brief, I like the fit in the butt and crotch better on the Arc'teryx, but the ExOfficio definitely fit nicer in the legs if you prefer the legs to have a snug fit.

As good as these are, it's really hard to justify paying $45 for a pair of underwear, especially if they are not perfect. I would give these 5/5 if Arc'teryx would fix the leg stretch issue and drop the price $10.

Don't have that long life

Don't have that long life

It after half a year of use...but stil make me dry

4 5

I use it

  • Gender: Male
  • Familiarity: I've put it through the wringer

I use it for 3 years now or so, for running (road & trail), for trekking and climbing. it work great and it fast drying. I never have a jock itch with it.
The only problem is that the upper elastic boxer have short life. the rubber get uot after half a year. . . but it still working, just look bad

4 5

Pricey, but nice

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

Nice and light, packs small, quick drying, good stink proof. Yeah, if you can afford to spend this much on underwear they're great. Oh, almost forgot...no peehole, bit of a ding.