Enjoy a continuous cycle of clean, fresh air even while masked with this LED Fan Motor Mask. The integrated battery and 2-speed fan cycle air through a custom 4-layer filter designed to keep the air you breathe safe. Cycling the air via the fan makes it easier to breathe, prevents moisture from building up inside the mask, and stops eyewear from fogging up during use.The custom 4-layer KN95 certified filter effectively removes up to 99.979% of fine contaminants over 0.3μm. The first layer is a strong anti-bacterial net, filtering large particles, impurities, and bacteria in the air. The second layer features an activated carbon filter for sterilization and deodorization, capable of absorbing odors from formaldehyde, benzene, and other harmful substances. In the third layer, a HEPA filter handles PM2.5 including pollen, smoke, and dust. The fourth layer is a shielding protection net, effectively inhibiting bacterial growth and releasing negative oxygen ions. The mask is also easy and comfortable to wear thanks to the adjustable ear band. A Velcro strap makes it easy to make sure you have a secure fit.Note: Before purchasing, please check with local guidelines and recommendations to see if this product is suitable for your intended use.