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Ambassador Pack: 7 pairs at £15 each Show deal

Underwear packed with smart patent-pending technology

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3" Trunks
6" Boxers
7" Boxers


9/10 rate us the best

9/10 rate Crossfly the best underwear they have every worn. Every one of our products is carefully designed and engineered with the very best materials and made by premium partners.

We are so confident that Crossfly underwear is more comfortable than anything you’ve ever tried that we will offer money back guaranteed if you are not satisfied.

Quality Innovations

Our aim is to make everyday life more comfortable and efficient. That is why we’ve created technologies to help facilitate simple tasks like going to the toilet quicker to performing better at your sport whilst eliminating discomfort from sweating or chafing.

We believe that detail matters and so, we bring you innovations such as our X-Fly clever access and Coccoon internal pocket device. Crossfly will soon become your perfect workout partner.


Better materials and engineering mean that our products last longer. It’s as simple as that. Take our IKON boxers as an example, they will survive and still thrive 100+ washes (more than double our closest average competitor).

Knowing that our products will stand the test of time, we want our customers to invest well and Buy Nice and Not Twice. In doing so, you'll save you money in the long run and reduce waste for our planet.

What's more, all our packaging is plastic-free and 100% recyclable.

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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.