344
people found this helpful, as of 2023
ranked #68,040 most helpful
out of 571,544,897 reviews
★☆☆☆☆
Not a filter, just a small rectangle of material.
Just an impermeable layer of material, no air passes through it. Useless.
the product in question
Cherislpy 10pcs PM2.5 Activated Carbon Filter Mouth Mask Filters Breathing Insert Protective Mask Filter for Men Women,Anti Pollution Washable Cotton for Adults Outdoor Activities (10pcs)
4.5★ · 44,375 ratings, as of 2023