This product is approximately 15cm x 8cm. It is suitable for those with shoe sizes from 27cm to 29cm (slight variations are acceptable). (Made with 10mm PP rope for a generous size) Ashinaka Zori are sandals that were worn for about 800 years, from the Kamakura period to around the post-war era, and are sized to reach the middle of the foot. I made these after working as a chiropractor and reflexologist for 22 years. ☆ Wear them with your heel firmly in place, allowing your toes to extend beyond the zori. ◎ Wearing Ashinaka is said to improve posture by placing firm weight on your toes and heels, and to train the muscles of your lower body and core. ◎ The protrusion at the back stimulates the arch of your foot, which is said to regulate autonomic nerve function and provide a relaxing effect. * Refer to the first image, "The Key Point." ◎ For first-time users, it will likely be quite painful, but please start with short durations and gradually increase the time, rather than giving up. ◎ My husband, who loves foot massages, uses them all the time. ◎ They are washable, so you can use them hygienically. (Please be careful of color transfer) ◎ Please use them indoors only. There have been reports of even better effects when used during sleep. ◎ Please purchase only if you understand that these are handmade items. ⭐️ Even if the protrusions become flattened, the effectiveness of Ashinaka will not be lost. If the thong becomes loose, please retie it from the back or replace it and wear them until they are completely worn out. * We apologize, but we are currently not accepting new orders. If you like them, please purchase from here. #ClothZori #IndoorShoes #Slippers #Diet #Ashinaka #FootMiddle #Swelling #Stretching #Posture #BeautifulLegs #Core #FootMassage #HealthSandals