This is a set of three insoles for kids. These are used items, so please understand that there may be scratches, stains, wear, and discoloration before purchasing. From left to right: Approximately 19 cm (type that fits the heel and arch) Approximately 17.5 cm (also a similar type) Approximately 18 cm (cushioned type) You can also cut them to your preferred size. This is a set sale. I am not currently considering selling them individually. Please read my profile before purchasing.