Unique Dome Trim^® bristle design features raised center-row bristles that have been trimmed to form a dome shape, providing greater contact with the tooth surface and longer reach underneath the gum line. Softer and slightly more flexible outer-row bristles gently clean under the gum, while the slightly stiffer center-row bristles clean the tooth surface. Ergonomic handle design makes it easy for small hands to hold, and the suction-cup base holds the toothbrush upright when not in use to help keep bristles clean and reduce countertop clutter.