The highest copper content of any Foot Insole on the market is infused into the fabric of the Royalkart Foot Insoles as well as other Royalkart products. It utilizes genuine copper ions (Cu+ and Cu++) rather than copper oxide (Cu2O). This is an important distinction because it means that in addition to having the highest copper content… we also utilize the highest QUALITY copper. We believe that if you are buying copper garments that you should get actual copper in your sleeves and foot supports… and at the highest copper content available. Help support stiff and sore muscles and joints while still allowing you to retain your range of motion! Unlike big and bulky braces that restrict your movement. Royalkart products give you support while still allowing your muscles to move, work, and strengthen – for long lasting benefits. It’s no secret that as you age you feel more stiff and sore and it takes longer for your muscles to recover. Simple things like walking and going upstairs can even be challenging to some people as they age… especially people suffering from arthritis, inflammation, or injury. But giving up, doing nothing, and sitting on the couch is NOT the answer. Everyone knows that staying active and mobile is the KEY to a healthy lifestyle. That’s where Royalkart Foot Insoles and other Royalkart products come in. Now you can get the support you need to stay active and mobile every day. Perfect for people of all ages and fitness levels. Whether you’re an elite athlete, weekend warrior or simply an active parent or grandparent, Royalkart copper-infused garments provide optimal articulation and muscle support to help you feel your best and perform at your best every day.