The construction of the Sufoot Magnetic insole: Our magnets (700+/-100 Gauss) are carefully tested for the best result. The base of Sufoot magentic insoles are made of shock absorbing base material with a moisture-wicking micromesh top cover for improved hygiene. It is breathable and shock absorbing. The function of the insoles: The soles of our feet have a high concentration of nerve endings and about 60 reflexology points. 22 magnets massaging your feet cavities, stimulating your feet reflexology points. Relax Muscles. Reduce Muscular Aches And Pains. Improve blood circulation. Digestion system. Improve quality of sleep. Weight Loss Helper. How to use these Sufoot Magnetic insoles: The insoles are designed for use in footwear such as: trainers, running shoes, hiking shoes, wellies, walking shoes, work shoes, ankle boots, and knee-high boots. Suitable to wear everyday. Adjust size and shape by trim guide on the insoles. UK 6-12. EU 40-46. US 7-13; UK 3-8. EU 36-41. US 5-10 30mins on 1st use, add additional 30mins each time to allow your feet to gradually gain comfort with the insoles. Wear for at least 3 weeks to feel the full effect. Package included: 1 pair X shoe pad