Unused. Includes the main unit and instruction manual. No outer box. L size (25-27cm) "Ashipita" utilizes the thong effect of waraji sandals to cushion the impact of the foot hitting the ground during walking, enhancing the arch of the foot. It also improves balance by allowing the foot to firmly grip the ground, promoting good posture. Furthermore, it improves the overall function of the foot through toe exercises and keeps the feet warm.