This set of mask is a sterilization level medical 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 virus and bacteria. YOUTUBE VIDEO：https://youtu.be/8vWh3onbL2A
* Triple filtration and ethylene oxide sterilized, 99% filtrating medical 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/box, 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!
Item Name: Medical Face Mask
Main Material: Non-woven Fabric + Filter Material + Nose Bar
Size: 21*8cm(3-layer,independent packed)
Implementation Standard: YY/T0969-2013
Validity Period: 5 years
Using Hour: ≤8 hours
Quality Grade: First-class
View More: https://youtu.be/WErIiK70wsA
* There could be some deviations due to manual measurement or slight color difference owing to photographing condition. Thank you for your understanding.