Designed, engineered and tested in collaboration with Ultra runner Zach Miller. Whether it’s your first run in a while, a 5K or a ultramarathon, Run XP will deliver ultimate chafe free comfort and support.
All purchases include FREE delivery. Express delivery is available for USA (Look out for the delivery badge).
UK deliveries are sent by Royal Mail 1st class signed for. We aim for all UK orders to reach you within 3 days of purchase.
International shipping is currently available for Europe, Canada, Japan, Dubai and Australia. Please allow 10 working days for product to be shipped from the UK (Goods will be sent via Royal Mail international tracked).
Returns If you're not happy with your purchase, please contact us within 14 days of receipt and we will either arrange replacement goods or refund you the purchase price under our quality guarantee.
How to measureInches
CXP X ZACH MILLER
Our mission at CXP is to make the best possible sports underwear on the market. Our first of it’s kind technology allows athletes to train at a higher intensity for a longer duration. That’s why working with Ultra Endurance Athlete Zach Miller to test and develop the Run XP is the perfect collaboration.
Watch the video to learn more about Zach’s unique lifestyle, training and involvement in Run XP.
" I've run long distances in this fabric through heat and humidity - It did awesome! Dries really quick and keeps me cool ”
The data we collect using cookies helps us understand our customers better so that we can provide a more focused user experience. Our cookies don't store sensitive or personally identifiable information such as your name and address or credit card details.
Some of our cookies are essential and enable you to move around the website and use its features, such as accessing secure areas of the website. Without these, cookies services like your cart and checkout experience cannot be provided effectively. Because these cookies are strictly necessary we do not need to ask for your consent to use them.
Performance cookies collect information about how visitors use a website, for instance, which pages visitors go to most often, and they let you store items in your shopping basket between visits. They may also show us which email or web page visitors clicked through from in order to visit our website, and whether you opened an email we sent you. Some of these are analytics cookies, set using third party web analytics software, which allows us to monitor our website traffic.
You can manage your cookie preferences using the checkboxes provided or accept all for a better, more focused user experience