About this item: Insole ConstructionEach Pair has 18 high quality natural magnets to cover your foot acupuncture points, massaging your feet while you walk. The magnets are carefully tested for the best result. Insoles are constructed from a base layer of durable lightweight shock absorbing EVA, a sandwich layer of cushioning foam creating a customised comfortable fit over time and finally a top cover of natural leather for improved hygiene and stunning touch. FunctionThe soles of our feet have a high concentration of nerve endings and about 60 reflexology points. 18 magnets massaging your feet cavities, stimulating your feet reflexology points. Relax muscles, reduce shoulder pain, back pain and knee pain. Improve blood circulation Improve cerebral circulation Promote cardiovascular health Activate breathing Strengthen the autonomic nervous system- solar plexus (reduce stress and anxiety) Promote heart and liver health Strengthen and support spine Improve sleeping quality and reduce headache Increase libido Relax the abdomen and aid digestion, help weight loss. How to useFit many kinds of shoes. Adjust your size by size line guide. Suitable to wear everyday.