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  • Everyday underwear

    Enjoy Maximum Support with Our Innovative Features Coccoon Internal Pocket Support System... 

    Everyday underwear

    Boxers + Trunks

  • Sports

    The Performance Series features our best men’s sports underwear, designed to move... 

    Sports

    Compression boxers + Socks

  • Luxury

    Luxury should be an everyday expectation. Crossfly introduces a new Luxury Series... 

    Luxury

    Tees + Underwear

  • Socks

    Feel The Difference With Crossfly Men's Socks  Crossfly's socks for men combine... 

    Socks

    No Show, Low & Crew Cut

Bestsellers

WHY CROSSFLY UNDERWEAR?

  • CHAFE-FREE COMFORT

    Introducing our COCCOON™ pouch

    • Prevents skin-on-skin contact
    • Boosts airflow
    • Gives you a gentle lift 
    • Stay cool, comfortable, and supported all day long.

  • LUXURIOUSLY SOFT

    Made with Sustainable & Butter Soft Modal

    • Unmatched comfort
    • Highly breathable
    • Natural Odor Resistance
    • Long-lasting modal blend

  • Our Story

    Hear from the founder on why Crossfly is comfortably the best.

    • Game changing technology
    • All-day comfort, morning to night
    • Built for both rest and tough workouts

  • TIRED OF FUMBLING?

    Our X-FLY™ technology is the solution

    • Fast and easy access from the top
    • A design that makes sense
    • Designed to hide drips & mishaps
    • Ideal for any adventure

  • ZEROFOLD360 WAISTBAND

    A waistband that moves with you

    • 4-Way stretch
    • Brushed finish on the inside for next-to-skin comfort
    • Perfect for active lifestyles

Shop by collection

  • Underwear

    Enjoy Maximum Support with Our Innovative Features Coccoon Internal Pocket Support System... 

    Underwear

    Maximum comfort

  • Socks

    Feel The Difference With Crossfly Men's Socks  Crossfly's socks for men combine... 

    Socks

    Cushioning your every step

  • Lux Series

    Luxury should be an everyday expectation. Crossfly introduces a new Luxury Series... 

    Lux Series

    Everyday Luxury

    New

  • Performance Series

    The Performance Series features our best men’s sports underwear, designed to move... 

    Performance Series

    High-intensity sports

    Semi-compression

  • Everyday Series

    Our comfortable men's underwear range is designed to provide unrivalled comfort and... 

    Everyday Series

    Your daily go-to's

Shop now

Discover our product range

Underwear

Technology & features

Socks

Technology & features

  • Money back guarantee

    Love our products, or get your money back on your first pair.

    FAQ's

  • 9/10 rate us the best

    Based on 2700+ verified customer reviews.

    Reviews

  • FREE SHIPPING & RETURNS

    Just spend £50 for free shipping. Always free returns.

    Shipping & returns

  • Technologies that matter

    Patented features that focus on elevating comfort.

    Technologies

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Premium Men’s Underwear That Works As Hard As You

At Crossfly, we believe that men’s underwear should deliver on every level - style, performance, comfort, and innovation. That’s why we design premium men’s underwear with patented technologies, sustainable materials, and the all-day support you didn’t know you needed.

Whether you’re dressing for the day ahead or winding down after one, Crossfly’s premium underwear delivers fit, feel and function that go far beyond the basics.

Innovative Technology

From our signature X-Fly® easy-access feature to our ZeroFold360™ waistband, every detail is made to enhance comfort and usability. Our Coccoon internal support system provides breathable separation and reduces friction - ideal for active days, long hours, or whenever performance matters most.

Looking for more performance-driven styles? Explore our range of men’s sports underwear.

Better for You - Better for the Planet

Our Everyday Series is made with sustainable Modal fabric - soft, breathable, and eco-conscious. It’s a choice that feels good on your skin and does good for the planet.

Discover why our collection of comfortable men’s underwear is trusted by those who want more from what they wear.