Approximately 4cm to approximately 6cm - 6cm - - 5.5cm - - 5cm - - 4.7cm - - 4.5cm - - 4cm - 1 set contains 12 pieces (6 pieces per foot) Package may have folds or wrinkles. The package bag may open. Please understand. #PurpleShulepas #PurpleFashionItem If the shoe size is small, adults can also use it. I was able to use it with 23cm sneakers. It's not absolute as it depends on the design. Please understand. I'm using the rainbow ones for kids, and people who see them for the first time always say they're cute, so I recommend using multiple colors! The colors used may vary depending on the number of holes and size. Please understand.