Give mid arch feet the support you need with these insoles for sof soles fit series with an anatomical nylon plate and high rebound foam the insole improves the fit performance and comfort of your shoe and lowers the impact of heel strike poor foot alignment can cause problems for the feet legs and back the high arch insole works in conjunction with your foot type to promote the natural biomechanics of your unique stride this reduces the risk of injury and improves performance features