The really portable toothbrush. Twist the handle right-ward to have the brush head extended and ready to use. After use ,twist the handle left-ward to store the brush head into the handle ,for most sanitary storage and convenient carrying . Ideal for travelers, office workers, students. Dupont made soft nylon bristles, rounded bristles tips prevent abrasion to teeth and gum. Durable non-slip handle. Replaceable brush heads.