The Jordan Advanced Medium toothbrush features medium-hardness cross bristles and stepped bristles, as well as an active indicator for effective cleaning of hard-to-reach areas. The active indicator (in blue shade) is a ChangeMe sign that shows when the toothbrush needs to be replaced. When the blue bristles fade, usually after about 3 months of use, it is time for replacement. After this period, the toothbrush becomes less effective. The bristles and handle are made from high-quality polymer material.