The three-layer non-woven fabric filter effectively blocks pollen, dust, and house dust (BFE value 99%).
The nose bridge conforms to the shape of your nose for a better fit when in use.
It is a rubber band type.
*This product is shipped by the manufacturer in case units. Specifications: White
Size: 9.5cm x 17.5cm
Quantity: 1 case (50 sheets/box x 60 boxes)
