Designing a better run, one step at a time.

Our scientists partner with researchers around the world to study how the body moves when you run, from upper body rotation down to ankle movement. Then we take that hard-won knowledge and put it at the center of our gear design.

We interview thousands of runners to find out what they want and need. Other runners push our gear to the limit over hundreds of miles, offering crucial insights along the way. Because after all, the final test is whether it makes you happy.

See how we help tap into your body's natural potential for a more efficient run.

Check out the lab where we take “what-ifs” and make them reality.

Learn what groundbreaking shoes are made of—from heel to toe.

Find out how our gear is cut from a different cloth.

Discover how our bras deliver support and comfort specifically for runners.

Leisure suits may not have survived the seventies, but our ideas about running sure did.