A miracle cure! I always had problems with the calves. For loads after 15-20 minutes running or football often play a sudden lurch in the calf and then 3-4 weeks break. Now I can go jogging or long kick and legs are afterwards no longer tired. I do not know how much time I've spent with orthopedic or sports medicine. Stretching, magnesium, a lot of drinking, deposits - tried everything. I am happy! Size was suitable for me. On and off can be so simple. Super product!