The Vicks Mini Filter Free Cool Mist Humidifier creates cool, visible mist to help temporarily relieve cough and congestion symptoms for better breathing and more comfortable sleep. Designed for small rooms, this 0.5-gallon personal humidifier has adjustable mist control to regulate the humidity level. The air humidifier can operate for up to 20 hours on the lowest setting, and it automatically shuts off when the tank is empty. The transparent tank has a wide opening that makes it easy to fill, use, and clean. This Vicks Cool Mist Humidifier utilizes ultrasonic technology for whisper-quiet operation that won’t disturb sleep, and it has a built-in soft glow nightlight. The Vicks Mini Filter Free Cool Mist Humidifier requires no filters and works with Vicks VapoPads, so you can add soothing menthol vapors for added comfort. A sample Vicks VapoPad is included.