I have always had problems with shoes that have a thin / hard sole. Then hurts the balls. For racing, I once tried the SQL soles. And worked great. Since I wear the soles even in everyday shoes. Surveying the merchants should make. Then the correct soles (yellow / blue / red) are determined. Then sole for the shoe cut and finished. Running in all shoes is comfortable and I also roll better. It feels as if the shoe does not fit 100% in advance and with the SQL sole consistent fit perfectly. It's amazing. Depending on the use Häufigkit I change from the bottom after 3-4 years. Then, the flat run and the lead is lost / become less.
