Important Shipping Note: U.S. sales only.

Model Number:

The ASICS ASX Boxer is a seamless running bottom engineered for running. It features compression paneling and an anatomical support system for added stabilization and protection during exercise.


  • Charcoal Grey (99)


  • 3" inseam, 8.5" outseam (size medium)
  • Mostly seamless construction
  • Ribbed waistband for added stabilization
  • Compression paneling
  • ASICS' anatomical support system for protection
  • Flatlock stitch construction
  • Gusseted crotch
  • Sculpted leg opening for movement
  • Odor-reducing technology
  • Approximate waist measurements: SM/MD:31"-33", MD/LG:34"/36", LG/XL:37"-39"


  • Hydrology: (54% Nylon/37% Polypro/9% Spandex), a substantial, soft, moisture-transfer fabric that provides dryness and strategic support

Apparel Performance Characteristics

Apparel Fit: What's this?

  • Compression
  • Fitted
  • Semi-Fitted
  • Relaxed

Temperature Range °F: What's this?

  • Cold
    • Below 30
  • Moderate
    • 30-45
    • 40-55
    • 50-65
  • Hot
    • above 65

Fabric Thickness: What's this?

  • Thin
  • Medium
  • Thick

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Customer Reviews

Comments: Nice and soft and light with pretty good support. Needed these to wear with my shorter inseam running shorts. The waist is relaxed so they do not produce a "muffin top" like some other compression type shorts with a heavy elastic band. :) They also don't chafe and hold sweat like cotton does. Pricy, but worth it IMO. Check sizing chart, if you are a 29" waist the small will probably be too big because of the relaxed waist section. I would call and see if RW can special order XS.
From: Steve, Prescott Valley, AZ, USA.