You don’t know what’s in the air around you. But if you wear the ATMOBLUE Wearable Smart Purifier, you can be sure that what you breathe is cleaned up to 99.97%. In fact, this smart face mask has a 99.97% filtration rate with its H13 HEPA filters. And it blocks 99.9% of bacteria, pollution, smoke, and allergens. So you can keep your lungs and sinuses clear and healthy. Moreover, ATMOBLUE has customizable HEPA caps and enclosures that you can swap..