Having the hollow foot, so rather embarrassed over the long term by many street shoes without foot arch and after the test repeated insoles (various knee / ankle pain) custom made by a podiatrist, who were very bad hips, I tried these soles of curiosity, and it was a great surprise: one feels immediately comfortable with the shoe itself seems better designed, the foot arch is just right. The heel provides additional cushioning with its portion of latex; the size corresponds to that of my shoes (42 for me); I simply removed the little latex padding on the front of the foot that I felt too, just slightly off the sole at borders of the plastic part: it does not destroy it. The insole is easily room in the shoe and does not move or very little: not need double-adhesive face, which makes it possible to use the same shoes in different shoes. The overall quality is excellent, I will redeem probably because these shoes are remarkable!