Kawahara Walking Magic Eye Insoles Size: 23.5cm - 24cm Retail Price: ¥1980 I bought these for my mother at a rehabilitation class last year, but she didn't use them, so I'm selling them. They were used once in the rehabilitation class. Used for about 30 minutes. Please check the Kawahara Walking website for the effects. There are no major stains, but they are used items. Please understand this before purchasing.