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YOU'RE ABOUT TO EXPERIENCE ULTIMATE COMFORT.

At Crossfly, we truly believe we've created man's most comfortable underwear and we want you to experience it. We also know that most guys don't like change so if you don't love them, just get in touch and enjoy hassle-free return.

So let's get started!

Don't forget to use the 30% discount code TRYCROSSFLY30

30% DISCOUNT on first order
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Tech that matter

Experience unrivalled comfort and support from our patent-pending innovative internal pocket system, the Coccoon. With this design, skin on skin friction and chafing are removed.

All our underwear is made from premium fabrics. In our Everyday Series, the IKON and IKON X styles are made from super-soft and sustainable modal fabric whereas the Pro 7" features an ultra-breathable mesh fabric made from nylon.

Just ran 61km ultra this weekend and never had to readjust or felt uncomfortable...

Dicky (from YouTube Review)

Crossfly has been a vision of a small team of sporting product professionals from the UK and America. Together, we have acquired decades of experience working in the Sports industry for global brands within Marketing and Product Innovation. After a few false starts, some legal issues, a eureka moment, and a global Pandemic Crossfly was finally ready to get going.


WE'VE RAISED THE BAR and deliver the most comfortable underwear and socks you will ever wear; packed with patent pending technologies and features that offer ultimate comfort whatever you're doing. GAME. CHANGED.

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