The crane ultrasonic cool mist humidifier frog provides additional moisture to help relieve symptoms such as sinus irritation coughs and other effects of dry air and the cool mist helps support easy breathing and offers relief from congestion the humidifier comes in a cute frog design perfect for a childs bedroom features ultrasonic cool mist increases air moisture for easier breathing and a good nights sleep relieves cough cold and flu symptoms nasal congestion dry cough sinus irri