Arc'teryx Phase SL Boxer Men's


  • 100% Polyester
  • PHASE SL BOXER SHORT - Technically advanced, designed for high-output activities and comfortable enough for daily wear, the men’s Phase SL boxer is a silkweight performance base layer that rapidly wicks moisture and stretches with the body.
  • ARC'TERYX ESSENTIALS - Versatile high performance designs for diverse activities and conditions.
  • PHASE - Quick dry base layer with excellent moisture management. For high output activities.
  • SUPERLIGHT - Superlight materials and design, emphasizing light weight and packability over durablity.


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Technical Features
- Moisture-wicking
- Breathable
- Lightweight
- Quick-drying
- Mechanical stretch textile for unrestricted mobility
- Flatlock construction improves next-to-skin comfort
Design & Fit
- Stretchy fabric allows you to move more freely
- Anatomical shaping for fit and comfort
- Gusseted crotch for comfort and freedom of movement
Waist & Belt Configuration
- Comfort waistband with laminated, soft-brushed finish
Logos & Label Configuration
- Non-chafing label

Product details
  • Is Discontinued By Manufacturer : No
  • Product Dimensions : 11 x 9 x 3 inches; 2.4 Ounces
  • Item model number : 16258
  • Department : Mens
  • Date First Available : December 5, 2016
  • Manufacturer : Arc'teryx
  • ASIN : B0163YSTL8
  • Amazon Best Sellers Rank: #335,762 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry)
    • #99879 in Men's Shops
    • #295 in Men's Boxer Shorts

I've Arc'teryx, Icebreaker, Smartwool etc underware and that's the most ergonomic. One of the best moisture-wicking fabrics. Dries fast.

- no fly (however that's the very same feature which makes it comfortable (and lighter);
- develops an odor within one day.

These are my 3rd ones. Very light and feels comfortable.

1. Keeps what needs to be kept in place even with marked bending at the waist.
2. Dries in a matter of hours.
3. Not too tight around the waist, yet hold in place.

None so far.

Runs small. Ordered XL and fits like a large. A XXL fits like an XL (according to sizing charts I ordered correct size to begin with). I like these, thought they could use a little more room in the cup. Comfortable to wear.

I purchased these arc teryx boxers because I have had a couple of pairs over the past few years and they are the best boxers that I own. The Material lets you breathe, while also doing a good job of staying put and not riding up over the course of the day. Really comfortable, high quality and they last the course of time. I highly reccomend them.

If you wear cotton underwear your defeat your layering as the cotton stays wet ! I'm out in the cold all day in my 60s and can take it thanks to proper layering.

This is my go-to hiking, climbing, skiing, backpacking underwear. They don't ride up and stay in place during strenuous activities. Expensive but worth getting 1-2 pairs for your adventures.

I understand that Arc'teryx "SL" gear is trading off longevity for weight savings. However it's under 2 months after purchase, and there are threads fraying and popping out everywhere. That's 5 or 6 wears out of a $45 pair of boxers?? Pretty sad

Absolutely worth the investment. I have since switched my entire underwear drawer to these despite the higher price tag. Fit is perfect for those that are active and built a bit more muscular in the legs. Perfect for all day at work and ending it at the gym.

once you worn them once and stretched to your size 1st wear these are really great, light weight ect, it was between these and the smartwool type ones, these are great as i said but the smartwool mernio's wins it for me, however these will defo last way way longer that the smartwool ones, still trying to decide which one will win over all then i'll buy a few pairs of one of them, maybe these for summer with shorts i'm thinking, some peeps go on about the no fly bit? not and issue in my books, keeps them tidy and snug without it in my opinion

Ran the Marathon Des Sables in these, loved them as they were comfortable throughout. They are used regularly for endurance marches and they have lasted well, a brilliant bit of kit.

Bei Arcteryx hat man generell sehr hohe Erwartungen, besonders bei den Preisen. In diesem Fall wurden diese allerdings nicht erfüllt.
Die Hose sitzt bequem und ist gewohnt hochwertig verarbeitet. Allerdings hat man recht schnell diesen unangenehmen synthetischen Geruch, den ich eigentlich nur von billigen Polyestersachen kenne.
In Zukunft werde ich wieder zu Merino oder Tencel greifen.