3M 9000ING is a top-quality safety mask and respirator designed with three effective filtration layers. The outermost layer efficiently screens out larger particles, ensuring maximum protection. The inner layer maintains the shape of the respirator, providing a secure and comfortable fit. The sublayer contains electrostatic filter media, enhancing respiration and filtration efficiency against PM2.5 and other pollutants. Experience the ISI-approved PM2.5 Anti-Pollution Face Mask for reliable respiration and safeguarding against harmful dust and particles.