When it comes to masks, there is a lot of misinformation out there \u2014 and it's easy to get confused. Does your mask filter particles? What size particles? Does it sterilize the air you're breathing? In the case of the UV Mask, the answers are yes, 0.3 microns (similar to an N95) and absolutely \u2014 with 99.99% efficiency. Whether you're working on a construction project, walking outside in an area of high pollution or simply want to be a bit more cautious about the air you're breathing, the UV Mask is a great solution. It offers two layers of protection, combining a pre-filter to filter out particles in the air, before passing the air through a "Sterile-Vortex" which uses a high-intensity UV-C light to sterilize it. The result is air that's 99.99% purified by the time it reaches your nose, mouth and lungs. It's designed in the US with key components made in Japan, like the silicone seal that's 100 percent airtight, a durable outer hardshell and a UV-powered purifier that can run for eight hours continuously. Plus, if you back the UV Mask on Kickstarter now, you can save 65 percent off the retail price of $249. BUY NOW: $249 $87 The CDC updates its guidelines and recommendations on masks regularly. To read the latest guidelines, click here .