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Mack Weldon Makes The Best Trunks


These Trunks Solve Problems

No roll waistband

Targeted cool zones

Stay put legs

Tagless design

Functional fly or supportive flyless

Three signature fabric choices

Underwear that Match your Life Style

product fabric
Skydiver Heather | Front view of AIRKNITx Trunk in Skydiver Heather

AIRKNITx Trunk $30

Skydiver Heather
product fabric
Blue Stone | Front view of Silver Trunks in Blue Stone

Silver Trunk $36

Blue Stone
product fabric
Bluelight | Front view of 18-Hour Jersey Trunks in Bluelight

18-Hour Jersey Trunk $26


Three Fabric Choices

18-Hour Jersey & AIRKNITx & Silver

Better underwear is softer with just the right amount of freedom and support. We engineered our own fabric and spent over 10,000 hours to make sure our underwear is more comfortable for you.

18-Hour Jersey is the softest underwear you’ve ever worn.

AIRKNITx is lightweight, breathable, and keeps you fresh all day long.

Silver is blended with antimicrobial Silver XT2®, a material used by NASA.


“Honestly - been wearing these trunks for going on 7 or 8 years, which also means they last! Nothing fits so well.”


“I am a new lover of the trunk. I often find boxer briefs rolling when I'm in slim jeans or work clothes. The trunk is the new boxer brief.”


“I’m so happy I decided to try them after scrolling past them on fb many times. I’m so impressed with the fit and feel. Definitely worth the price.”


You could be more comfortable.