Made of high-quality copper fiber material, durable and stable,guaranteed Highest Copper Content. Built to greatly strict quality control standards, with stable and excellent performance, help you get the support you need for all day and all night comfort. The surface of the glove is covered with non-slip particles to keep it greatly strong holding power. Protect your hands, help promote blood circulation, reduce stiffness and relieves arthritis pain. There are differnet sizes for you to choose, which can perfectly fits different hands size.