Turn a plain old bottle of water into instant dry air relief with this ultrasonic personal humidifier. Lightweight and portable, it's designed to eliminate dry air that can cause sore throats, bloody noses, coughing and inflamed sinuses. Simply insert the humidifier into a filled water bottle and turn it on-the low setting moistens just air around the unit, set it to maximum to moisten air in the entire room. Penguin style.