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Our Technology

Crossfly socks are as technical and comfortable as our underwear. Our product development team have spent valuable time choosing best materials and testing the socks to ensure that comfort is the number one priority followed but breathability so that they can be worn for sports as well as everyday wear.

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

Dicky (from YouTube Review)

Money Back Guarantee

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.

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