The Vicks VH845E1 Warm Mist Humidifier helps provide comfort and relief for both kids and adults. It releases up to 99% bacteria-free mist into the air to help promote easy breathing and allows for a more comfortable sleep. It features a large, 3.8L tank that can last up to 24-hour per filling, so you won't need to worry about having to refill the humidifier during the night. It has two levels of output to get just the amount of moisture you need, depending on the size of the room and the dryness of the air. This humidifier is compatible with VapoPads scented pads with essential oils. Its tray accepts up to 2 VapoPads for soothing vapors.