Five Layers of PM 2.5 air mask filtering, bring you a safe breathing experience.
Size Measurement: About 4.72 x 3.15 inches/ 12 x 8 cm, compatible with most of adult mouth masks. Package includes: 20 x White PM2.5 Activated
Easy to insert or replace the PM2.5 Activated Carbon Filter along the opening of facial mask.
Recommendation for Health: please replace the mask filer every 1 or 2 days of uses for the best effect, depending on the frequency of mask using.
Extensive usage: This safety mask filter can be used to protect you from harmful dust particles, PM2.5, vehicle exhaust, woodwork, pollen.
Package including mask filters and free mask.
If you are in a hurry, please choose DHL, it will be delivered to you faster.