50 PCS Anti Pollution Breathing Valves Filter Air Breathing Filter Accessories, Valves Breathing Dust Proof Windproof Foggy Haze - Black

I used this product for my homemade masks. Worked for me on bandana material (double layer), and cotton material (double layered). Makes mask breathing easier. Arrived in a sealed plastic that is see through. The only frustrating part is all of the soft rubbery plastic filters are not in the valves, so you have to search the bag for them. Since the valve is plastic, and the vent piece is a rubbery material I am going to attempt to wash it in the washer and then by hand to see which will work better. Be sure the rubbery vent piece is inserted into the valve where you can breathe out of it, but not into it.

The product arrived as described with good quality. My fault for not doing better research. Can’t use them for face masks as the vent allows persons breath out to possibly expose others to virus and bacteria spread

The product came in three different pieces and we're so cheaply made. There is definately areas where are and other stuff can get in and out if used in a mask . The only reason I gave any stars was because I had to in order to leave a review .

These are only compatible with masks that use the very same valve. They are not the same dimensions and are not compatible with the more popular twin valve mask.

Me llego en buenas condiciones, me gusta aunque es un poco dificil de ponerlo en la cubreboca, lo recomiendo.

There were no filters with order very very disappointed!!! Dnt buy !!

Na

Hard to fix on the cloth