After my cruciate ligament during a football game I had ever after resumption of trainings feel to tilt away with the knee. On the advice of a physiotherapist I bought the Trim Disc and was really surprised. I train now for several weeks 3 times a week in order and the stability of the strips and thereby the stability of my knee is constantly increasing, so I can finally resume the normal training. The coordination improves. I would highly recommend this product.