Key Specifications/Special Features: High quality non-woven material complied with: * Level 3 - ASTM F2100-2019 * Type IIR - EN 14683-2019 - Special design to fit all face shapes and offer maximum comfort for the sensitive skin - Adjustable nose clip with highly stretchable, soft and comfortable elastic ear-loops. - The outer layer is non-woven fabric to block dust and water. The 1st middle layer is non-woven fabric with enhanced ability to block dust. The 2nd middle layer is MELT-BLOWN to filter out tiny dust, pollen, smoke, fumes, and haze at particle size 0.1 �µm. The inner layer is soft on skin and absorbs moisture * Nelson test reports are passed and compliant with ASTM standards - Bacterial Filtration Efficiency (BFE) â?¥ 99% - Particle Filtration Efficiency (PFE) â?¥ 99% - Viral Filtration Efficiency ( VFE ) â?¥ 99% - Differential Pressure < 6.0mm H2O/cm2 - Splash resistence / Synthetic Blood Resistence: 160mm Hg - Flammibility: Class 1 * Packaging: 50 pcs/box, 40 boxes per carton - Size: 170 x 90 mm (+/- 5mm) * Use: Perfetta Ultra mask helps with protecting against the dust, smoke, airborne allergens, and pollen. The masks are intended for Public & General Use. Daily use for indoor office settings, shopping centers, and convenient stores, as well as general indoor and outdoor public spaces.