Vogmask N99CV are CE Certified Respiratory Protective Devices to EN149:2001 + A1:2009. All sizes Certified Reusable Personal Protective Equipment : filtering half masks to protect against particles. Meets NIOSH N99 particle filtration criteria for filter efficiency as stated in 42 CFR Part 84. Regarded worldwide for design, efficiency, comfort, fit and reusability. The happiest mask to breathe clean air.