High Arch Support: Highly elastic memory foam material. Insoles designed with high arch support change the force-bearing structure of the foot, providing an ideal solution for plantar fasciitis, flat feet, stiff steps, high, weak, and drooping arches. Function: High arch support can relieve foot pain. Reduce fatigue when walking or exercising. Suitable for sneakers, flats, boots, and even all shoes. Flexible, soft foam supports your feet for all-day comfort. Material: Made of high-quality and durable materials, safe for the human body, environmentally friendly product, no toxic side effects, suitable for men, women and children. Size: M: 37-42, the insole size can be cut according to your shoes, there are clear cutting lines on the back of the insole.