Though most of the commonly available Breath Free Mask N95 pollution masks can be worn and used a number of times, they do have a life. Once the mask gets worn out or the filter gets clogged due to the pollutants, it will no longer be effective to protect you against pollution.The effectiveness of a pollution mask primarily depends primarily on how well it fits on your face. Most of the N95 pollution masks are available with a nose clip that will allow you to adjust the grip of the mask as per your face so that there is no leakage of unfiltered air when you are wearing the mask. The cleanliness of the filters has to be ensured for effectiveness. So, make sure you change the mask or filter on time.Click Here https-www-marketwatch-com-press-release-freedom-mask-reviews-price-where-to-buy-freemvn-carbon-fiber-filter-mask-2020-04-12