Stars Anti Dust PM 2.5 Activated Carbon Filter Insert Cotton Face Masks Replaceable Face Mouth Cover Masks(50PCS)

Five layers-2 layers of meltblown fabric, 2 layers of non-woven fabric, 1 layer of activated carbon
Three-dimensional design can make people breathe better,suitable for all face shapes
The face cover filter is ideal for all outdoor and indoor sports, such as running, jogging, cycling, motorcycling, riding, hiking, skiing, snowboarding, paintball, lawn mowing, on public transport and other activities
Made of quality activated carbon, non-woven and melt-blown filter cloth, can effectively filter out 99% of exhaust, smoke, dust, chemicals, particles and fumes.
SIZE:12.2cm*9.8cm/4.8in*3.86in