Designed for people with flat feet, the Frido Rigid Arch Support shoe insole & plantar fasciitis insoles correct the feet’s shape, fallen arches, overpronation, and knock knees. The shoe insoles also help relieve arch, ankle, foot, back, hip, and knee pain. With insoles for plantar fasciitis, Frido provides EVA foam and orthopedic gel, which makes the perfect shoe insoles men & women can use. Wearable with every kind of shoe, these arch support insoles are trim-to-fit & customizable.