Designed by the renowned Yves Behar, Jawbone takes mobile style to new heights. Jawbone's perforated shield curves to match the outline of your face while the inside surface is made from medical grade plastic to provide a soft and smooth feel on the skin. Jawbone can be worn on either ear, and you can customize your fit by choosing an ear loop and ear bud from the several shapes and sizes provided. Jawbone's ergonomic design enhances acoustic performance and keeps the device lightweight, stable and comfortable.