Half Insoles Used only once. The surface is clean, but the underside has some small debris from being worn once. Body: EVA, Surface: Polyester Approximately 25g for both feet. The talus fit: This is a versatile insole that corrects the inward collapse of the talus (ankle), which can cause flat feet and bunions, and balances the center of gravity. It has a special shape that fits any shoe, and can be used with leather shoes, pumps, sneakers, etc. You can feel less fatigue and easier movement by stabilizing the body axis. Especially recommended for those with flat feet or bunions, those with severe foot swelling, those who stand for work, and those who get tired easily.