Extra protection for tough times: The SeLF helps shield you from particles around you including smoke, pollen, etc

Handy purifier for on the go: Built with lightweight yet sturdy construction, this gadget is comfortable to wear for hours

Energy-efficient for long lasting use: Equipped with a heavy-duty rechargeable battery, 1 hour of USB charging offers 24 to 30 hours of use

Easy and hassle-free operation: Utilizes state-of-the-art technologies, boasts a simple, user-friendly design. To use, just press the button on the back