About Runderwear

Runderwear is the original performance underwear for running. Our mission is to eliminate the discomfort caused by ill-fitting underwear and clothing and create performance running underwear, base layers, running bras and socks that are supremely comfortable and chafe-free.

At Runderwear, we believe that nothing should hold you back from running your best – especially not discomfort. That’s why we create high-performance, chafe-free running underwear, socks, and bras, designed to keep you comfortable mile after mile.

Born out of frustration with ill-fitting, irritating running gear, Runderwear was founded by runners, for runners. We obsess over every detail – from seamless technology and breathable fabrics to targeted support – so you can focus on your performance, whether you're training for a 5K or conquering an ultramarathon.

Our award-winning designs have helped thousands of runners stay comfortable, and we continue to innovate to ensure you have the best running experience possible. No distractions. Just you, your run, and the ultimate comfort.

Run chafe-free. Run happy. Run in Runderwear.

Everything we do is built on passion.

"When I started runderwear there was no master plan. I was just one person incredibly passionate about running who were frustrated that no one had made underwear designed for the running community."

Jamie Smalley, Founder & CEO