Sidas Custom Insoles 26cm - 26.5cm These insoles were purchased at the end of last season. They are as hard as a steel plate because they have a carbon plate inside. Because they are very hard, the response is excellent. However, they are too hard for me, so I have decided to sell them. Recommended for athletes. How about these for those who are considering purchasing Sidas custom insoles or for those who want a sense of the sole of the foot and quick movements? I bought them new, but they are used as I have used them several times. There may be scratches and stains that are not visible in the photos. Please refrain from purchasing if you are concerned. Shipping will be via postal mailbox. Thank you.