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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Review summary
Created with AI, based on recent reviews
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Reviews shaping this summary
I like the product and my experience of customer service has always been good. The “uplift” that these pants provide is great and better than others I have tried. My only criticism is that the produ... See more
This was my third purchase. Having tried various makes of underwear, Crossfly are the most comfortable I've worn, and the the way the fly is designed, no more fumbling around. Slowly, because they... See more
Company replied
At 78 and having always worn briefs type underpants I decided that perhaps I would try boxers. I tried pairs from a well know High St store and also from a well know brand of boxers. Neither provided... See more
Company replied
Company details
About Crossfly
Written by the company
Crossfly was created to redefine everyday comfort for men. For too long, men have settled for outdated designs and average-quality underwear, while women’s underwear has evolved with innovation, support, and premium fabrics. We’re here to level the playing field — with performance-driven, intelligently designed products that put comfort first.
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
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
Get your money back if you're not 100% happy.
Contact info
United Kingdom
- hello@crossfly.com
- crossfly.com
Bestselling styles
4.5
Excellent
441 reviews
Replied to 100% of negative reviews
Typically replies within 1 week
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
I'm in a pouch, but it's comfy!
I ordered the small size (though I usually go for medium) as I assumed the fit would be snug and supportive, but they slipped on very easily and I was worried at first there'd be no support. But after getting used to everything being bunched up into a pouch they feel quite comfortable. I gave 4 stars because I would have liked the internal pouch to have a slightly wider edge to it to help with getting everything in there!
January 2, 2026
Great fit and top quality
Great fit and top quality
Must buy over there competitors
December 22, 2025
For the Team
Crossfly! Well what can I say? Guys you hit the nail on the head. A long time ago I managed an Underwear store on old Compton St in London.
As a result I was a buyer! Buying from brands like Diesel, Hugo Boss, Calvin Kline, Ginch Gonch, Tommy Hilfiger, D&G, + the luxury version Dolce & Gabbana. And so many more. Basically I’ve seen thousands of men’s styles of underwear.
From this role I saw the progress of all these companies. Many of which I went on to manage brand from Selfridges to Regent’s St to Bond St and Sloane St.
Dolce and Gabbana started making Underwear and look where they are now.
I believe Crossfly can go down the same path.
As of this date I now have purchased 35 pairs of your underwear.
You guys! Your at the start of your journey
There’s more to do. Keep exploring keep expanding. You have it all to come yet.
So don’t you dare give up.
If you need advice at all hit me up.
December 29, 2025
Reply from Crossfly
Wow — thank you for such an incredible and motivating review.
Coming from someone with your background and experience in the men’s underwear and luxury retail world, your words truly mean a lot to us. Knowing you’ve seen the evolution of so many iconic brands, and that you see that same potential in Crossfly, is hugely encouraging.
The fact that you’ve chosen to purchase 35 pairs is something we’re genuinely grateful for — that level of trust and support at this stage of our journey doesn’t go unnoticed.
We’re very much at the beginning, and your message is a powerful reminder to keep pushing, improving, and expanding. Thank you for believing in the brand and for the offer of advice — we may very well take you up on it.
This is just the start.
Supportive and comfortable
Why has it taken so long to design comfortable supportive men’s underwear! Pricy - but you definitely get what you pay for. Great product, prompt delivery, will certainly be buying more.
December 29, 2025
Reply from Crossfly
Wow! Thank you so much for your review. Indeed, this is a long time coming and we're so happy you've found and are enjoying Crossfly. Psst: we'd love for you to help us spread the word to your mates!
Very good ..
December 29, 2025
He liked them very much!
He liked them very much. Will be back to buy more soon. We would recommend Crossfly to anyone. Quality products, colours, and good choice. True to size too!
Thanks 🤩
December 16, 2025
Reply from Crossfly
Amazing, thank you for your excellent review and for spreading the word about Crossfly. You'll have received a referral postcard with your order, where your friends can get a good discount 😊
Soft material
Soft material, inner flaps aren't so thick that they become uncomfortable. Will buy again
December 16, 2025
I have had crossfly before
I have had crossfly before, and I have to say find them incredibly comfortable and supportive.
I like the prompt service I get and ease of ordering.
So thumbs up guys
December 16, 2025
Reply from Crossfly
Thank you so much for your continued support 🙌
We’re really glad to hear you find Crossfly comfortable and supportive — that’s exactly what we set out to achieve. It’s also great to know the ordering process and service have been smooth for you.
Thanks again for the thumbs up, it truly means a lot to us!
Wide and not supportive of the balls haha
Not as supportive as I expected. The underwear is bigger than the size on them
September 26, 2025
Reply from Crossfly
Thanks for taking the time to write a review. We're sorry the size was not right for you. If there's anything we can do to help find the right fit, please do not hesitate to get in touch.
Excellent product at a great price
Great item. Returning customer and the best out there. After trying similar alternatives. These won it on the comfortable waistband. Will be retuning again.
December 23, 2025
Unprompted review
Reply from Crossfly
Thank you so much for your continued support 🙌
We’re really glad to hear you find Crossfly comfortable and the waistband excellent — that’s exactly what we set out to achieve.
Thanks again for the thumbs up, it truly means a lot to us!
It’s a quality product
It’s a quality product, very comfortable, I would definitely buy some more in the future. Website was easy to navigate and place an order, shipment was fast.
December 13, 2025
Available-correct sizing- took care of…
Available-correct sizing- took care of the boys
September 19, 2025
Quality and comfort
These trunks were very comfortable and quality product. I would recommend them.
December 23, 2025
Amazing products!
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 they faired.....have been wearing for my treadmill runs and couldnt be happier. Now to place my real order to replace the old gear.
December 13, 2025
Unprompted review
We were searching for a company that offered this…
We were searching for a company that made great quality, roomie, and brief style. My son is a professional athlete and loves his Crossfly’s. Great customer service. Quick delivery. More orders to come in the future.
July 2, 2025
Reply from Crossfly
We're sorry to hear that our service was not up to standard. During busy periods such as Christmas and New Year, like most brands, our team have some time off and as such, the time taken to deal with queries may take a little longer. We apologise that you have had a slower than usual experience.
Friendly and efficient staff
December 18, 2025
Simply the comfiest boxers available
December 8, 2025
The product
December 16, 2025
The only problem with these underwear
The only problem with these underwear
Is your large is actually extra large
December 15, 2025
Reply from Crossfly
Hi there, you're right. Our IKON style fits on the larger size, which is why we have recommended that you opt for a size down. If this wasn't clear on the website, we will do our best to make this clearer for our customers.
We would be happy to exchange your products (unworn and unopened) to a smaller size if you wish – just drop us an email with your order number.
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