With its clear design, the Leaf Transparent UV Mask can actually clean itself. Through UV-C self-sterilizing technology, it ensures you don’t have to worry about cleaning yet another thing. Moreover, this transparent face mask uses U-series HEPA carbon filters. So you know it’ll make sure you breathe nothing but clean air. In fact, this clear face mask can filter nearly 100% of 0.3 microns. If you step it up to the Leaf Pro, you’ll get a face mask that includes an active air quality sensor. This model provides you with data about eCO2, VOCs, dust, your metabolism, and airflow. What’s more, it even boasts active ventilation for extra easy breathing. Aside from its technical aspects, this mask allows others to see your smile, which is a great feature.