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9/10 wear testers rate Crossfly the BEST MEN'S UNDERWEAR they have ever worn. Crossfly game-changing premium underwear feature two patent-pending technologies across the Everyday Series and Performance Series. The innovative X-Fly provides fast and easy access, and our Coccoon internal pocket support system minimises chafing and provides optimal comfort and support. 

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Love them, or we'll refund or exchange your first order.

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.