Mens ASICS ASX Brief Underwear Bottoms at Road Runner Sports
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Mens ASICS ASX Brief Underwear Bottoms

Men's ASICS ASX Brief

Item #TGM1288

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Reviews (13)
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Product Description:

Men's ASICS® ASX BRIEF :: You deserve the best for your whole body. The men's ASICS® ASX Brief is the perfect pair for running or hitting the gym. The ribbed waistband offers stabilizing comfort and you'll get added anatomical support from strategically placed compression paneling. Breathable and tagless plus flatlock construction and sculpted leg openings they've thought of everything, including odor-reducing fabric.

Features & Benefits:

  • Ribbed waistband provides stabilizing support
  • Compression paneling for added support
  • Flatlock construction for comfort
  • Mesh paneling to enhance breathability
  • Odor-reducing technology
  • Tagless design
  • 54% nylon/37% polypro/9% spandex
Product TGM1288 Review

Best Warm Weather Briefs


I am a 3x a week runner (20-30 mi/wk) with one long run 12+ miles about 50 weeks out of the year. Living in Houston, moisture wicking underwear are critical for obvious reasons. I have been wearing the Brooks Equilibrium briefs for some time, but have decided that these are significantly better for warm weather. These are a much lighter weight and faster drying fabric than the Brooks Equilibrium, and that counts during 80+ degree runs. I sweat very hard during summer long runs and am noticing that my shorts at times have been sweatier than these briefs at the end of runs. In addition, stitching is thoughtfully placed, leading to (in my experience) less chafing/hot spots from contact. Cons...these are a bit snug. M/L was noticeably smaller than in the Brooks Equilibrium. If you are a larger gentleman, you may want to size up from your usual briefs. In addition, wearing these on a single cold run (40 degrees) I can tell you wind resistance is poor. I think these do not replace the Brooks I have today, but for the months of April-October, these are going to be my daily runners, as warm weather performance is better than any other product I've tried on the market. If you run in warm weather for long distances, these are one of your best alternatives on the market in my opinion.

David H.

Houston, TX


The best underwear for running


Extremely well designed brief. Very supportive without being overly restrictive. Also very comfortable and light. It dosent ride up like a boxer brief - stays in place nicely. I will throw out my other athletic briefs and stock up on these. They also are holding up wash after wash.


Washington, DC


Very good, could use some tweaks


These are excellent, but I have some constructive criticism. PROS: (1) Excellent design on the seams and forget they're even there. (2) They breathe very well and dry out quickly. (3) Overall very comfortable. CONS: Despite their comfort, there are a few things that would make them better. (1) For me personally, I have a shorter torso so I prefer LOW-CUT undergarments. I hate having the waistband up near my navel. These are not quite that high but as with most undergarments they're just a little too high. (2) The leg openings are a little too low...I prefer a higher cut in front for better freedom. (3) More support. I'm between a Small and Medium and always size down if I can, for the reasons mentioned above. Despite that, the "Pouch" is a little too low and loose. It should be a little higher and firmer. I have to pull them up higher than I prefer to get the support. Overall good product, though.




Size runs way small


I really liked the Brooks briefs, but they don't make them anymore. I wore a medium in the Brooks and they weren't tight at all. ASICS has a strange sizing, they come in S/M, M/L, and L/XL. I have a 32" waist, weigh 160 pounds and very small hips, so I tried a S/M first time. I just took them out of the package and without trying them on laid them on top of the Brooks briefs for comparison. They were much too small, so I sent them back in exchange for a M/L. I though for sure they would fit, but they were a little tight when I put them on. I think they are trying too hard to save on materiel because they rode lower on my hips than I'd prefer. So with that I'd say buy 2 sizes to big, and I won't be buying any more of these.


Memphis, TN


Great support and wicking


Extremely comfortable and supportive briefs. Great for under running tights etc. Wick away sweat very quickly. They don't get better than this!

HTC Runner

Portland, OR

Running Briefs - No Chafing!


Have you ever wondered what the perfect undergarment is for racing in bad weather? Well, I found it. These briefs are not restrictive, yet they provide adequate protection during those cold, windy races. I ran in them at the Charleston Half this past weekend and they worked great!


Raleigh, NC

comfort personified


The ONLY underwear I have ever found to be comfortable enough for all running tights and shorts. I would like them to be less expensive but not if it diminished the quality in any way

Coach Zo



Love them!


Definitely will get some more. .I was hesitant at first, but after my first run in them, they're like a second skin. I don't notice them, no chafing...wish regular undies were this good!

Computer Geek

Columbus, OH


Very Comfortable Briefs


Needed a ned support brief. tried the Asics on a whim as this type of garmet is in very low supply. Glad I did. Great product. Will be adding to the wardrobe very soon.

Flash aka Mike

Potterville, MI


awesome !


These are very comfortable ! I have tried a bunch of different athletic underwear , and these are the best ! I started with one pair, then quickly bought four more !

Billy from South Carolina

Greenville, SC


Good quality and performancs


used product for running and cycling has good support. Fit true too size,would buy again




Great item


Great product. I own six pair. They are true to size and provide the support needed for running.


Des Moines, IA


If the brief fits....


Very supportive when worn under any form of tight.

Runner Rob



Mens ASICS ASX Brief Underwear Bottoms

4.6 13


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