Compression is a great prevention and recovery tool for sore muscles. The pounding, especially for runners with less efficient biomechanics, can cause shin splints, tendinitis, or torn muscles. Putting your lower extremities under compression can improve muscle efficiency, actually improving performance, while protecting the runner from overuse injuries. Made from the performance fabric, an engineered knit, which Zensah has become known for, the shin and calf are each provided differing compression. They are effective and durable, and available in a rainbow of colors, and black or white. Their website, Zensah.com has more information available.