Made of premium medical grade melt-blown filter fabric for better breathability, comfort and reducing irritation. With ≥98% BFE (bacterial filtration efficiency) and ≥96% PFE (particle filtration efficiency) which is used to block live bacteria (viable particles) from 1 to 5 microns and micro particles (nonviable particles) from 0.1 micron to 1 micron. It has ultra-gentle ear loops for comfort even with long wear. Suitable for daily use. Our stylish mask is customized (175mm x 950mm) to provide users with a better fit and added comfort for long wear. Perfect for daily protection for both work and play.