Argentium (940) silver band, approximately 1/4 inch wide. The band is shown here stacked between two, 18K yellow gold bands (not included in the price). The comfort fit band is made from 16 gauge silver which is durable yet low profile enough to wear during all daily activities and sports, plus it fits comfortably under gloves. Argentium is a tarnish resistant silver alloy and will keep its finish unless exposed to chlorine, then you'll have to brighten it with baking soda (care instructions included). Each Argnetium band is made to order, email me your ring size. Shipping within the U.S. only.