Even though I wore these show for a few hours in a very clean building doing very little walking, they developed brown crack lines in the shiny toes. I have tried to use shoe polish, white paint pen, the erase sponge and cannot get the mark to go away, It is embedded in the plastic. the rest of the shoe looks like it just came out of the store, even the soles. I am not happy with them and now cannot return them as the return policy says I am unable to do so. NOT happy. I cannot even give them to a second hand store because who would buy them with the way they look?