Offering Balance Kobo's STRE (Balance Sheet). This is an unused item. These are insoles for heels and pumps, designed to effectively use your foot muscles with a 3-point balance system. They are also recommended for improving posture, reducing swelling, and combating foot fatigue. As they are adhesive type, they are less likely to slip inside your shoes and can be used stably. Furthermore, when changing shoes, they can be reattached by cleaning the sole's underside. This time, they are being sold as a great value set of two. [Size] L (24.0-25.0cm) Recommended for those who frequently wear heels, or for those conscious about beautiful legs and posture improvement.