30PCS Adult PM2.5 Activated Carbon Filter Insert 5 Layers Replaceable Anti Haze Filter Paper

A bit small for my mask but still does the job.

I've tried many filters over the past year and I am so excited to Finally find one that does not steam up my glasses! This is a great discovery in these trying times, and makes my mask wearing finally tolerable. The multiple layers and charcoal filters make me feel as safe as possible, but the anti-haze magic puts them over the top. Thank you for figuring out a way to do this for glasses wearers ! You are appreciated. This will be my choice until.. well, whenever...

Good quality. Would definitely purchase again.

Wear in my cloth mask all the time!

These filters are great to slide in the inside pockets of some masks and I think add some extra protection !

I can breath better in these than the folded home made ones.

With a clothe mask hard to breathe.

Use with masks. Good product