Copper Bracelets Copper-Pure Sports Bracelets are increasingly popular with today’s active person. Wear your Copper-Pure Sports Bracelet everywhere. As you wear your sports bracelets, a green patina may form on your wrist from the formation of soluble copper: this may be removed with ordinary soap and water. Each bracelet comes in 3 different sizes. Use the chart below to determine the size you need. Each magnetic has a rating of 2500 gauss.