The Seattle Times: Pacific Northwest Magazine : Wrap it Up: "Z-Coil shoes are certainly one way to put a spring in your step. And you can't miss them. The heel is a coil.
The product's goal is to relieve foot and back pain as well as arthritic and knee problems by cushioning the shock of each step and redistributing pressure. The coils can be adjusted to match your walking style or troubleshoot a squeak or click. "
WRITTEN BY RICHARD SEVEN