These stainless steel designs are ideal for the active person.  You can swim, shower, exercise, etc in these and it will not affect the magnets!  Since the Power Magnets are prone to rust, this is the best alternative.  The magnets are neodymium but they are incapsulated into the bracelet and protected so they will not rust.  The magnets are glued in and also have a clear coating over the top to make sure they don't fall out.  The gold is 14K electroplating and could lighten over time, however, we have seen that they hold up quite nicely even under extreme circumstances.  Easily adjusted to fit. They are sizable with pins just like watches are.  All are about 8" each.  Buy more to save more!