100 Pack Activated Carbon PM2.5 Filter Insert 5 Layers Replacement Anti Haze PM 2.5 Mask Filter Paper

This is for sure a great product. I got curious on how the filters were layered so I cut and splitted the layers. it’s cool to see that they added multiple layers of filters, which makes it hostile for unwanted substance to breathe in.

I don't have any scientific instruments to measure how well these filters work, but I did use these with a cloth mask, while there was a lot of smoke from the wildfires in California. I was outside with a cloth mask with the filter on, and I could not smell any smoke at all. To test if it was the mask/filter that actually filtered out the smoke, I lowered my mask and could immediately smell the smoke in the air.

Prompt service. Excellent packaging. First class filters.

The filters are well made and make me feel safer while wearing my mask.

Quality made. I will purchase these again.They are not paper thin which I'm very pleased.

Good quality and came on time!

I bought these as replacement for a few masks I had gotten with these filters included. I use them at work and in my everyday life. I have not had any problems. They are moisture proof which is good in my field of employment.

I LOVE these for my mask. I have severe asthma and it really absorbs the moisture which was causing my lungs to burn. Plus I like having that extra layer of protection.

usata questa mattina per la prima volta, come antiappannamento mi sembra poco efficace, spero funzioni meglio come protezione virale, forse leggermente piccola rispetto alle mascherine.

Ho ordinato questi filtri per mascherine e sono arrivati perfettamente imballati e personalmente li trovo molto utili, sopratutto in questo periodo di grande difficoltà!!Ottimo rapporto qualità prezzo.

Sembra che facciano il loro dovere. La confezione da 100 pezzi, poi, è davvero conveniente.

Ho comprato questo filtri perché mi ero trovata molto bene con quelli che mi erano stati mandati insieme alla mascherina che erano uguali a questo prodotto qui. Un pochino Niccolò per chi ha in viso grande

La foto in offerta è ingannevole: mostra l’inserimento in una mascherina per bambini.