The Feedback is a sleek, contemporary ear cuff inspired by cybernetics and robotics design. The upper and lower components are joined by a soldered bracket that attaches over the back of the ear. No piercing necessary. Eric wears size large. Sadie and Kris wear size small. Materials: Stainless Steel. Backing bar can be slightly bent to better fit your unique ear shape. Size Small: 51mm long x 38mm wide. Size Large: 64mm long x 44mm wide.