I purchased this about a year ago from Cosmic Hemp. Cosmic Hemp 16 Circle Insoles Made with Himalayan original hemp fabric ■About the size: It's 23.5cm. Since these are insoles, they are recommended for those who wear 24cm to 25cm shoes, rather than a perfect fit. ＜Shop Description＞ ■Materials Himalayan original hemp fabric insole Chaco Ball Charcoal Balls (2-part resin, Himalayan hemp charcoal, Himalayan crystal powder) ※I used these for several months while wearing socks. There is almost no dirt or odor, but the fibers around the toes and heels are slightly worn. Please purchase only if you are okay with this.