"This striking braided link design combines 99.9% pure copper with comfort, flexibility and style to move with your active lifestyle. All styles are designed for comfort and manufactured to maintain shape and quality appearance. Copper, when in contact with the skin, form chelates with human sweat (sometimes seen as a green deposit under the bracelet) and is thus absorbed through the skin. It can be removed with soap and water or lemon juice. Copper Link sizes are S/M (7.5”) and L/XL (8.25”)"