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Our comfortable men's underwear is designed to withstand standard washing conditions. You can wash them at temperatures up to 40 degrees Celsius and dry them naturally or on low heat. We advise you to wash Crossfly products with similar fabrics and avoid abrasive materials, like towels.

Yes, we offer sizes ranging from 29 inches to 45 inches (XS-XXL). We aim to make everyone feel confident in Crossfly. Should you
require additional sizes or have any feedback, feel free to contact us at info@crossfly.com.

Absolutely! You can
find our size chart here. Please be aware that the IKON and IKON X styles fit larger due to the stretchiness of the modal fabric, so we advise you to go one size down. (Eg: if you’re an M/L or 35” waist, please opt for a Medium) By contrast, the Pro 7” Boxers in our Performance Series fit true to size.


If your order hasn't arrived within the expected timeframe, please contact our Customer Service team at info@crossfly.com. They will help track your order.

After placing an order, you'll see a
confirmation message on your screen and receive a confirmation email with your order number. If you encounter any issues, contact us at info@crossfly.com

We strive to ship orders quickly, so changes or cancellations are typically not possible once an order is placed. Please verify all details before submitting your order. If you need assistance, contact Crossfly during business hours.

Contact us immediately at info@crossfly.com. If we can't amend your order, you can
return the item under our returns policy.

We accept Visa, Visa Debit, Mastercard, American Express, PayPal, Google Pay, Shop Pay and Apple Pay.

Sale prices apply to eligible items until the end of the sale period. These offers cannot be applied to previous purchases.

No, coupon codes are not valid during sales. Only one coupon can be used at any time unless otherwise advised.


UK shipping costs are:

£5.95 for DPD24 (with tracking and 'signed-for' service) and
£3.95 for RM48 (with tracking service).

EU shipping costs vary. Free shipping applies to all UK orders over £45 and EU orders over €100.

In the UK, we use DPD24 or RM48 services, depending on your preference. EU orders are shipped via DHL.

A tracking link will be included in
your Shipping Confirmation email. Orders placed during weekends will be shipped the next business day.

Yes, we will refund the full purchase price for returned items, provided they are in their original condition and packaging.

Refunds are processed as soon as we receive the returned items. Please allow 3-5 business days for the credit to appear on your statement.


We treat your data with utmost confidentiality and never share it with third parties. For more information, please refer to our privacy policy here.

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.