I wear Zcoils, and I love them. They are good for my heel spurs and they straightened out my posture. I've been teased but I laugh with them. They're weird looking and expensive but they're worth it.
I've been wearing Zcoils for 6 years. I got the idea from nurses and orderlys at the hospital. Sure they looked weird but I understood the concept. A shock absorber. If cars can have shocks, why not shoes. Thanks.
only constructive criticism I can offer is on a polished wet concrete floor they are extremely slippery. so something to improve that would be nice. should not affect your decision to buy a pair.
You should have contacted Al Gallegos, founder, in Albuquerque, NM, 1-800-268-6239. They warranty their shoes. The individual stores do NOT necessarily back the product. The Zcoil above will back their product.