The Black from SuperfeetGrid® is particularly suitable for low shoes, lightweight trail running, and mountain biking shoes. Simply replace the manufacturer's original insole. With significantly more cushioning and support, your leg muscles will tire less quickly. You will also experience much better heel support in your shoes, which is very noticeable. If you have sensitive feet and pressure points ruin your day, then the SuperfeetGrid® Black DMP insoles are exactly what you need. Size B: 35 - 37, Size C: 37 - 39, Size D: 40 - 42, Size E: 43 - 45, Size F: 45 - 47, Size G: 48 - 50.