This product is approximately 13cm x 8cm and is suitable for shoe sizes 23cm to 26cm (with some allowance for size differences). Ashinazouri (half-foot sandals) are sandals that cover the mid-foot, which were worn for about 800 years from the Kamakura period to around the post-war era. I made these, having worked as a chiropractor and reflexologist for 22 years. ☆ Wear them with your heel firmly in place, and let your toes extend beyond the sandals. ◎ It is said that wearing Ashinazouri puts weight firmly on your toes and heels, improving posture and strengthening the muscles of the lower body and core. ◎ The protrusions on the back stimulate the arch of the foot, which can regulate the function of the autonomic nervous system and provide a relaxing effect. * See image 1, "Key Point" ◎ It will be quite painful for beginners, but don't give up. Start with short periods of time and gradually increase the duration. ◎ My husband, who loves foot massages, uses them all the time. ◎ They can be washed with water, so you can use them cleanly. (Please be careful of color transfer) ◎ Please use them as indoor footwear only. There have been reports that using them while sleeping has even better effects. ◎ We appreciate your understanding of handmade products. ⭐️ Even if the protrusions are crushed, the effect as Ashinazouri will not be lost. If the thong becomes loose, retie the knot on the back or replace it, and wear them out. * We are currently not accepting orders. If you like them, please purchase them here. #ClothSandals #IndoorShoes #Slippers #Diet #Ashinaka #Ashinaka #Swelling #Stretching #Posture #BeautifulLegs #Core #FootMassage #HealthSandals Pattern/Design: Checkered