This set of the mask is a 3-dimensional face mask that can against droplets. Its filtration up to 99% with premium non-woven fabrics. With an adaptable nose bar and 3-layer protection, it can perfectly protect you from b-acteria. YOUTUBE VIDEO:https://youtu.be/8vWh3onbL2A Features: * Triple filtration and ethylene oxide s-terilized, 99% filtrating face mask, filter almost everything that attempt to invade to your nose and mouth. * 3-layer breathable and soft non-woven fabrics, never feel uncomfortable and sultry when wear it. * 30pcs, every mask is independently packed, hygienic and safer. * Adjustable nose bar and elastic ear loops fit most people. * 100% Worry-Free Warranty: Any problem, please contact our store without hesitation. Honor to serve you! Specifications: Item Name: Face Mask Main Material: Non-woven Fabric + Filter Material + Nose Bar Color: White Size: 21*8cm(3-layer,independent packed) Validity Period: 5 years Using Hour: ≤8 hours Quality Grade: First-class View More: https://youtu.be/WErIiK70wsA Note: * There could be some deviations due to manual measurement or slight color difference owing to photographing condition. Thank you for your understanding. Package Information: Package Size: 23.5*9.5*8.5cm Package Weight: 188g Polybag Package Packing List: 30* Mask