I've needed some new underwear and purchased a myriad of single pairs from different companies. The crossfly won hands down for support and comfort. Grabbed 1 pair of short running socks to see how... See more

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About Crossfly
Written by the company
Born from a small team of UK and US sportswear professionals with decades of experience in product innovation and marketing, Crossfly was created with a simple mission: to elevate men’s everyday comfort through intelligent design, premium quality, and sustainable thinking.
We’ve poured our expertise into creating a lifestyle brand that puts performance, durability, and comfort first. Our underwear and socks aren’t just everyday essentials — they’re your go-to, must-have gear that supports you through work, sport, travel, and everything in between. With every Crossfly product, you’ll feel the difference from the moment you put it on.
What Sets Crossfly Apart?
Unmatched Comfort: Our Cocoon internal pocket system offers all-day support, eliminates friction, and keeps you cool — so you can focus on life, not discomfort.
Innovative Design: The X-Fly reimagines the traditional Y-front with a faster, smarter, one-handed access system that just makes sense.
Premium Fit: Our ZeroFold360™ Waistband moves with your body and stays smooth — no rolling, no digging, just pure comfort.
Feel-Good Products in Every Way We don’t launch anything unless it improves on what came before. That means using superior materials that feel better and last longer than the competition. And where possible, we choose sustainable options, from responsibly sourced fabrics to 100% recyclable packaging. Because looking after the planet is part of feeling good, too.
Our Vision: Take Comfort to the Extreme Whether you're pushing limits or just getting through a long day, Crossfly is designed to move with you, support you, and make you feel great doing it. Once you’ve worn Crossfly, you won’t want to go back.
Discover the Crossfly difference at crossfly.com
Free Shipping
Written by the company
- With any purchase above $60/£50
- Shipping costs sucks. We know it. We try to be as fair as we can and absorb the cost so you don't have to. We have a low threshold for this reason so you can enjoy free shipping (most of the time).
Crossfly Promise
Money Back Guarantee on your First Pair
Contact info
United Kingdom
- hello@crossfly.com
- crossfly.com

Bestselling styles
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Great qality and comfortable
Fantastic product
Fantastic product. Material is very soft and comfortable. Will be my regular

Reply from Crossfly
Very comfortable control.
I was really pleased with the feeling and fit of the six inch boxers, everything is kept nicely in place without any chaffing. True to size and very comfortable to wear.

Reply from Crossfly
Comfortable boxers with support so far…
Comfortable boxers with support so far no chaffing in usual area

Reply from Crossfly
The best!
The best looking, most comfortable underwear! High quality and long lasting too. This is my second purchase and I'll keep coming back.

Reply from Crossfly
Delivered to incorrect house and still waiting
DPD Delivered to the incorrect house.
Emailed crossfly and still awaiting response and Delivery

Reply from Crossfly

Reply from Crossfly
First rate product
First rate product not the cheapest but you get what you pay for. Great to wear hardly know you are wearing them. Best I have ever had. Will be ordering more.

Reply from Crossfly
There is no room for the boys in your…
There is no room for the boys in your product.

Reply from Crossfly
Center of pouch too loose and baggy, no support
While the sides of the pouch felt more supportive the center of the pouch is too loose and baggy giving no support at all.

Reply from Crossfly

Reply from Crossfly
Easy ordering and prompt delivery
Easy ordering and prompt delivery. Was rather surprised at the size of box for a single pair of pants. Was expecting a small package that would fit through the letterbox, otherwise I would have left the porch open for him to deliver into. By chance I happened to be at home when he called, so no problem.

Reply from Crossfly
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