Brand new, unused, authentic product. Purchased in October from the official website. Unisex. [Product] Pitsole [Size S] (23.0-24.5cm) [How to Use] 1. Remove the original insole. 2. Overlap the Pitsole with the original insole, aligning the heels. 3. Trace the excess toe area with a pen, etc., to mark it. 4. Cut off the excess with scissors, etc. 5. Set it in your shoes and check the fit. Thank you! ^_^ Available for immediate purchase! Limited quantity, so first come, first served!