The AirQueen mask, produced in South Korea is a substantial N95 equivalent. FDA approved and approved for Medical and consumer use. Intended to be worn by operating room personnel during surgical procedures to protect both the surgical patient and the operating room personnel from transfer of microorganism, body fluids and particulate material. The AirQueen facemask is classified as a medical device class 2 (FFP 2) and is FDA and CE approved, Niosh tested and passed. This mask is similar to the 3M masks. Filtering efficiency 96.03%~99.694%. 3-layer structure 3-D design. Design similar to the KF94 model.