really helps and does what it promises

As you get older you realize that one or other sport but at a point or another, no matter what fitness level you have. Especially sports with a lot of jumping and start-stop sprints like the basketball made painfully evident at knees and heels. Therefore, the attempt of this small "helper".
To admit we need a bit more room the shoe, but that it should be clear any previously prior to its best-away thin labbrige Original sole. In practice, however, they have paid from the first use - absolutely painless after training, I'm thrilled. A small sole of the shoe, a big step for the health.
I use the deposits (now several) in Nike Air Jordan (various types), not necessarily low-quality segment, yet these soles give amazing.
For durability, I can not say anything yet.
Conclusion: Who is confronted playing sports with knee or heel problems, these deposits should definitely give a chance or an alternative to the orthopedic surgeon.