Extra Small | Fits wrists up to 6-1/4"
Small | Fits wrists up to 6-3/4"
Medium | Fits wrists up to 7-1/4"
Large | Fits wrists up to 7-3/4"
*Copper oxidizes naturally and quickly and will fade to a darker and more dull state over time if not polished. The metal can leave a green mark on your screen, but don't worry, it's harmless and is even renowned by some for its health benefits! How much and how quickly the copper will turn can depend on your perspiration and acidity levels, the condition of the air in which you live and any chemicals/solutions you come in contact with on a daily basis. Some people rarely, if ever, experience tarnish residue on their skin, while others see it within hours.