So, I must say that I and my son are just thrilled by the shoe protectors. We flew in that he does not so like it, but he has tried and tried to no longer at take off. He is quite proud when he has his self-proclaimed -Feuerwehrschuhe- that he can run so super. And I'm also very happy, because you so really can save a lot of money, because no longer wear the shoes !!! Very neat idea !!!