I bought these thinking they would be better than the cheap store ones, not worth it. They’re made of a soft silicone which while a high quality material, being so soft they slip out of the shoelace holes. After two days of wear my 7.5yo had lost 2 laces from each shoe. There were also not enough sizes, the smallest size was much too small and popped out almost straight away. A shame as they looked promising. Looks like I’ll be teaching my son to tie shoelaces!