Oh, the nostalgia! This simple ring is made up of stainless steel wire and a round bead that changes color with temperature. Stainless steel holds up to the elements, and will not tarnish or discolor. The circular shape of the bead rotates to allow you to fidget when you feel uncomfortable without drawing too much attention to yourself. Since each ring is handmade, expect slight variations from the picture shown. Included with the ring is a mood color chart card, printed on water resistant paper. All my jewelry is handmade and made with patience, care and love. If you have any questions about this item, or any other items in my shop, please feel free to contact me.