Solid copper chain, 1/8 of an inch wide.
Made in the USA.
If you have ever had a copper bracelet that started to turn green or even turn your skin green, you might have been turned off by copper.
Green marks might also appear when the body is deficient in copper so is trying to obtain it a rate faster than it can absorb.
When the body is in a state of homeostasis, the copper is absorbed through the skin at the same rate it is dissolved from the bracelet so there are no green marks.