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Everyday Series

Crossfly Men's Boxers - IKON X 6"

Fit tips

We recommend you go down a size in this style if you sit in-between sizes to get a more contoured fit as the modal fabric is very stretchy. (Ie: if normally a S/M or 31-32", please opt for S)

Size: S What's your size?
Size Guide

Men's Underwear

underwear size guide

The measurements on the size chart are body measurements. Find your correct size in the chart below.

Note that each style may fit differently due to the fabric used.

Size Chart








Waist (Inch)







Waist (cm)








Fit Tips

IKON & IKON X styles: (Choose one size smaller)

This style is made from Modal fabric which is quite stretchy. As such, we recommend that you order one size smaller than your usual size for a better fit.

PRO 7" style: (True to size)

Our customers find this style fits true to size.


How to measure

  • WAIST: Measure around the narrowest part (typically where your body bends side to side), keeping the tape horizontal.
  • INSEAM: Measure the from where your crotch meets the top of your inner leg.
Crossfly-how to measure
Color: Silver/Charcoal
  • First Pair Money Back Guarantee


The Ikon X 6" Boxer is the ultimate premium men's underwear, combining two patent-pending technologies. The X-Fly provides fast and easy access with its clever design whilst the Coccoon internal pocket support system minimises chafing, providing optimal comfort and support. Teamed with our super-soft Modal fabric, these will become your go-to favourites.


• Fabric: 95% modal / 5% elastane

We have spent 3.5 years working on the best & most technical pair of underwear man has ever seen; and reviews show that it works. But, they’re not just technical, they are also the most comfortable pair you will ever wear.


    Eliminates skin on skin friction and chafing providing greater comfort and support.

  • X-FLY

    Easier, faster access when nature calls.

  • ZEROFOLD 360

    Stays in place however active you are. 4-way stretch construction works with your every movement.

  • DRI-PX2

    ‘No Show’ Dual layer protects against excess drips and moisture.

This boxer is made from Modal fabric which is naturally quite stretchy. As such, we recommend that you order one size smaller than your usual size for a better fit.

This 6-inch inseam style is a mid-rise which means they’ll sit on your hips nicely for a classic look. Not too high, not too low.
The guy who goes between the gym and the boardroom. This versatile pair is designed for a wide range of sports from running to hiking as well as more relaxed activities.

Customer Reviews

Based on 57 reviews
David Howlett

Crossfly Men's Boxers - IKON 6" - CHARCOAL

Riley Shanley
Comfort is King

Most comfortable underwear I’ve ever worn. Material like no other

Alan Keegan
Didn’t work for me

I was looking for support as much as breathable underwear. Didn’t really work for me. Don’t feel any different to my usual brand of underwear..sometimes you’ve just got to try for yourself regardless of reviews.

Hi Alan
Many thanks for taking the time to write a review. We're sorry to hear you didn't feel the 5 star experience as many of our customers have. We appreciate you trying out Crossfly nonetheless. Kind regards, Val & the Crossfly team

Michael Jacobson
Not Good

At first glance the quality looked good. But I made the mistake of wearing this to work I sweat worse in these than my regular underwear and they made me chafe real bad. Should have bought a second pair of the pros. Won't be buying these again

David Johnson
Comfortable walking

I knew what Duncan said was good would be walked miles every day at the open no problems

Michael Berry
Great boxer briefs

Great fit and support. Dries quickly after washing..

Money back guarantee

Love them, or we'll refund or exchange your first order.

"Arrived on Saturday and I can honestly say that they are worth every penny"

- Vince Harris

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.