I had above set equal ordered twice, so my youth was a good starter ... unfortunately, the wait was a little long from the order date ... probably came from very very far away ... and then not shown, but another set without the LED shoelaces ... gums are also not stable ... tear due to excessive stretching (although I can not say how the quality of the original would be) ... but wanted the sets differently delivered not send them back because the waiting time anyway Beginning long and I thought rubber is rubber ...