This Magnetic FatBurning Far Infrared Insoles contain tourmaline and can self-heat, and its main effect is to message feet, keep warm and lose weight. These slimming magnets emit magnetic waves that weaken the fat cells in your body. Stimulate your body for better blood circulation and metabolism, reduce overall body pain and tension. Lose weight by walking or running with the magnetic FatBurning Far Infrared Insoles. Now you can enjoy more support, stability and comfort in all the shoes you love to wear. Inserting the insoles into any shoe is quick and simple! OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.