my 10 year old daughter did not leave for several weeks, she was thrilled, until she lost to the iron clip that had the tendency to discard! it's really the negative of these roller skates, we had many difficulties to tinker a replacement system! otherwise the product is not noisy it is the very good point + because even in the house my daughter moves without pbm! The light system is great! Engineering for used is not very simple at the beginning but it was quickly accustomed! I recommend, easy to carry fun for the whole family because they are adjustable in width and depending on the shape of the shoe ...