The BONECO Travel Humidifier U100 humidifies the air everywhere – while traveling, at home, or in the office. Since water quality varies regionally during travel, the BONECO U100 has been specifically designed to use standard PET bottles filled with clean drinking water as a water tank – practically without the need for transferring water. Thanks to the bottle adapter, you can easily use a 0.5-liter PET bottle as a water tank and humidify the room air with clean water. The bottle adapter is designed to accommodate the two most common bottle opening diameters. The lid of the BONECO U100 not only gives the humidifier an attractive and compact design but also serves as a functional stand during operation. This provides the humidifier with an optimal height for efficient air humidification. The additional lid insert is designed for practical and easy storage of the power adapter during transport.