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Man in a gym locker room wearing AIRKNITx Boxer Briefs

The Most Breathable Underwear for

Mack Weldon makes the internet's freshest underwear collection.

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AIRKNITx Underwear Details
AIRKNITx Underwear Details

Designed with every detail in mind.

Built to keep you dry, fresh, and comfortable, to the end of your workout or workday.

  • Supportive flyless pouch

  • Moisture-wicking & odor-fighting

  • Targeting cool zones

  • No roll waistband

  • Stay-put legs

AIRKNITx Fabric close up
AIRKNITx Fabric close up

Enhanced Breathability + Four-Way Stretch

Our soft, lightweight microfiber maximizes airflow and stretches in every direction. It’s topped off with a moisture-wicking, odor-fighting finish that’s been tested by fitness experts at Equinox to ensure a feel and fit like no other.

Try On Guarantee

If you don't love the first pair of underwear, we'll send you a different pair, or issue you a full refund - no return required.

Try It Now - Risk Free

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