In each episode of Kicksology, host Brian Metzler engages shoe designers, entrepreneurs, shoe company executives, retailers, athletes and physical therapists to talk about the evolution of running shoes, new shoe launches, breakthrough technologies, the biomechanics of running and everything running-shoe related.

In Episode 3, Metzler talks with Tony Post about his original fascination with natural running, how he once ran a marathon in dress shoes, his role with launching Vibram FiveFingers in the U.S. and how he grew TOPO Athletic from scratch. Post discusses how shoes have evolved through new materials and manufacturing and where some of the current footwear trends will lead us to in the future.

Metzler is the author of the book, "Kicksology: The Hype, Science, Culture and Cool of Running Shoes" and a long-time runner who has competed in races on the track, roads and trails from 50 meters to 100 miles.