chengJellyLibrary 50 Pcs PM2.5 Activated Carbon Filter, 5 Layers Replaceable Anti Haze Filters, Protective Mouth Filter for Outdoor (50 pcs)

These mask filters arrived in reasonable time frame, in good condition, exact quantity and were as described. They fit nicely into masks with the pouch for filter inserts. Would order again.

Much smaller than anticipated, unlikely to fit nose and mouth area for many people

Bought to support a multi use washable face mask. They seem to fit ok and don't seem to restrict our breathing much. Unfortunately they took a jolly long time to come.Even though they are correctly marked I obviously have no idea how effective they are against the Corona virus.Fingers crossed and breathe deeply chaps!

Used inside mask, feel better protection than using mask on their own.

They arrived all loose in a postal bag. Many scrunched up. The safety data number looks to have been burnt in to the filters and their are BURNT THROUGH HOLES I have requested my money back as I do not feel safe using them.Update: I was offered half my money back or I pay an expensive return to China.I pray to God they are not making our NHS supply’s

This item came quickly and well packed.The filters fit well in a number of different masks

Good product, I are using all the time.

It's a piece of thin felt, a bit questionable whether it can prevent the contaminants. I didn't do any reasonable test on this product but just feel it's more like a placebo.