Our insoles contain 10% fabric, 80% EVA, and 5% latex. They can reduce exercise fatigue, improve athletic health, and prevent arch deformation caused by long-term exercise. The material is soft and gentle, can solve the problem of hard soles, and can massage and soothe the feet. The usage is very simple: first measure the length of your foot, find the auxiliary cutting line that is slightly longer than your foot, use an old insole that fits your foot length and cut it down, and finally place the product into your shoes. It can promote height growth, correct sagging arches, relieve varicose veins and foot pain, improve body posture, and promote blood circulation.