ASSURE surgical masks that comply to ASTM level 2 and EN14683 Type IIR standard with a lab test conducted by a laboratory locally in Singapore showing a result of 99.9% Bacterial Filtration Efficiency (BFE) and 100% Particulate Filtration efficiency (PFE) that will be able to protect you from such viruses. ASSURE surgical masks are designed to fit comfortably on most adults and children faces with the elastic loop & metal nose piece that promotes fitting & comfort for long term wearing, providing both Protection & Breathability. Size: 17.5cm x 9.5cm