Black & Decker BXHU050 Ultrasonic Cool Mist Travel Humidifier Designed for travel; great to use in the office or on trips thanks to compact design; includes carry bag Conveniently works with a standard 16-ounce water bottle to create mist and provide relief from dry air anywhere No added cost, with no evaporating pads, filters or wicks to clean or replace Ultrasonic technology makes humidifier virtually silent, making it easy to have on while you sleep Soothing cool mist and variable mist settings