My Cart


What is Underwear

  • Runderwear™ is the most comfortable running and sports underwear in the world.
  • All products are seamless.  NO nasty seams digging in and causing chafing. 
  • The ergonomic product design works with the body to help reduce friction and allow freer, faster movement.
  • The technical fabric is moisture wicking - keeping you drier, longer.

Enter your email below to get 10% off your first order

You’ll receive an email - click confirm (takes 2.2 seconds) and you’ll receive your code.

No email? Contact us at

performance underwear
★ Read Our Reviews

Let customers speak for us

75 reviews
Awesome Product

As with all Runderwear items, it is comfortable and fits like a glove.

Comfort & Best Performance

I did my Spartan 5K wearing this, love the product.

Amazing product!

The process of online ordering is super simple and fast; products came within a few days and the quality is simply amazing. Will for sure order more in the future. Thank you!

Comfortable and does the job

Comfortable and does the job. Not much else to add. It protects the bits that need protection. Well worth it for those that are active.


Excellent customer service and quality of products. I really think these are the best value for money products in the market