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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.


"When I was first considering these I read a review from someone who said he was going to replace all of his old underwear with AIRKNITS. I thought it was a little bit ridiculous. Now I think I will eventually do the same over time. I would wear these every day if I had enough of them. They are much more comfortable than everything else."


"My husband will only wear these boxers. He says they keep him from not sweating and the wicking is the best and feels like you are wearing nothing."


“Apparently I have been living my life with the wrong underwear. The fit. The breath-ability. The POUCH. I mean... I'm cool, comfortable, and now supported by more than my overbearing mother. I'm happy to start my new life with Mack Weldon.”


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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