Sometimes, Speed Matters!

Underwear that gives you control and confidence that you'll never get caught short.

  • Speedy, clever access for when nature calls
  • Protection against excess drips and moisture
  • Luxurious comfort like you’ve never felt before


Internal pocket support you never thought you needed


Faster, easier access from the top


No show dual layer agains excess drips

Styles for you

IKON 3" Trunk

Made from silky soft modal fabric, these trunks are breathable and have been voted the most comfortable underwear our customers have ever worn.

IKON 6" Boxers

This style sits slightly higher on the waist and has a 6" inseam. The tonal colours of the IKON style ensures they will go with any outfit. Perfect for golfing, lounging and cruising.

Love them, or get your money back

1. Coccoon

Pocket system for greater comfort and support

2. X-Fly

Fastest fly you'll find combined with a hidden dual-layer that protects against excess drips.

3. ZeroFold Waistband

Using top quality fabric, it is designed to stay in place.

4. Luxurious Fabric

Silky soft modal fabric is breathable for all day comfort and sustainably made.escription here.

Don't just take our word for it

9/10 rate crossfly the best

Every one of our product is carefully designed and engineered with the best materials and made by premium partners.

The X Fly makes so much sense! I think this will be a real hit for older Guys who need to go more often, and sometimes at short notice!

Darren P.

These are well-made, comfortable and don't get you hot and bothered in the nethers!

Andrew Stewart

Have been looking for something to replace my Calvin Klein cotton stretch trunks and these are so much better. Great design, perfect fit and material.

Andrew Preston

Excellent! Very comfortable, great style and easiest to use fly. I have no hesitation in recommending them and will certainly be ordering more.


The most comfortable underwear I've ever had. Great design with an easy access flap.

Keith Oxley


Our game-changing Everyday Series is the ultimate underwear,
combining two patent-pending technologies to optimise comfort and support.

Underwear featuring unique technologies to optimise comfort and support.
  • Supportive


All our products are made with care and our packaging is 100% recyclable. We use Modal fabric in our Everyday styles, a material extracted from beech trees.


We use Modal fabric in our Everyday styles, a material extracted from beech trees. MODAL:
  • uses less water to process
  • less waste material

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.