Kenkoh insoles are made up of around 1,000 natural rubber nodules that massage and stimulate the bottoms of your feet. The massaging action, similar to therapeutic acupressure, occurs continously while walking, standing or sitting. A foot massage with every step! Kehkoh’s superior arch support helps keep you aligned and prevent foot pain, especially from conditions such as planter fasciitis, foot pain, back pain, ankle pain, edema, heel pain, migraine, lower leg muscle soreness