Approximately 4cm to approximately 6cm 1 set contains 12 pieces (6 pieces per foot) The package may be creased or wrinkled. The package bag may open. Please understand. #PurpleSchrepas #PurpleFashionItems Even adults can use them if their shoe size is small. I was able to use them with 23cm sneakers. It's not guaranteed as it depends on the design. Please understand. #HalloweenOnMercari