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Underwear packed with smart patent-pending technology

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That fabric has to breathe. It's not enough for men's underwear to be soft and supportive. If your tighty-whities and boxer briefs aren't made with breathable fabric, you'll find your nether regions uncomfortably hot and damp. Not only is this uncomfortable, but heat and moisture over time will increase the risk of skin infections
  • 3 min read

At Crossfly, we take making the best men's underwear seriously. To address a need for a straightforward pair that can satisfy the needs of the many, we went back to the drawing board. The result? The most comfortable underwear for men we've ever worn.

  • 3 min read
No single garment is more important than our underwear. It protects our most sensitive regions and is the final line of defense against irritation. In the search for the best men's underwear, the best fabric, the best features, the coolest design, one might overlook crucial criteria in selecting: the fit
  • 4 min read
Underwear is the most personal of all our garments. It's the first on and the last off, the secret statement for yourself and private moments - it ought to reflect your taste and style.
  • 5 min read
Your underwear size is important. It's your most private garment, the first on and the last off. It ought to fit you like a second skin. But for some, finding the right size in your perfect underwear isn't always easy; understanding body measurements and reading a size chart can easily lead one astray.
  • 3 min read
Overheating of the genitalia isn't just a problem for those who want to be able to reproduce. Heat and moisture are a recipe for irritation, stickiness, odor and skin problems. So it’s time to pay attention to fabric as much as women do. Read on to learn about the healthiest men's underwear in the market.
  • 4 min read
Did you know that modern men's underwear as we know it didn't come into existence until the mid-1930’s? That's right, those brave lads who fought in World War One were fighting with one weapon left very much unholstered.
  • 5 min read

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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