This respirator is recommended for Health Care Providers (HCP) Our respirator is designed to protect against living organisms such as viruses, bacteria, fungi and hazardous particles The filtration level is 99.9899%. The respirators consist of 4-layers of high-quality spunbond fabrics and outstanding performance melt-blown filtering fabrics. Our respirators are designed to protect you against viruses (COVID-19), bacteria, fungi and hazardous particles