RZ Mask M2 Mesh Air Filtration Face Protection Dust Mask with 99.9% Effective Carbon Filters for Woodworking, Construction, Large, 1 pack, Black

Good

Ya la habia visto en un video se me hizo algo bueno por lo accesible de poner y quitar xon velcro, muy recomendada se ve la caludad y se siente me quedo confome a las medidas aunque una medida arriba me hubiera quedado mas olgada pero me quedo justa que pues es mejor a la larga para que no ingrese por ningun lado el aire contaminado.

We had an issue with sizing and the seller was very responsive and helpful.For buyers, there is both a facial measurement and a body weight criteria for sizing.

Very nice. Well built. Top quality.Easy to use and adjust.Be sure to pay attention to the sizing.

Very disappointed!I bought this to filter the PM2.5 and PM10 particulates that are causing air quality problems in Australia because of the raging bushfires.It is definitely NOT a large size mask and the extension strap is useless and completely ineffective for extending the size of the mask.Whilst the mask fits on around my face and head, it pulls down way to much on my nose bridge making it very uncomfortable. Even with the extension strap in place (that barely holds) it still does the same thing. I think this is because the next band is much lower than the face mask, so it can only pull down. It needs an additional higher strap that goes around the back of the head, not down low on the neck.The extension strap is a thin piece of velcro, but it doesn't provide anywhere near enough contact with the other end of the strap to ensure a strong hold. Moving your head around causes the velcro to come undone.The filter tries to cover most of the mask area but there are areas that the filter doesn't cover, e.g. it is smaller than the mask. If the mask fits snuggly against the face I ASSUME this filters the air properly to the measured standard, but it's possible for such tiny particles (remember these are measured in microns, e.g 1000th of a millimetre) to get through between the filter and the face. There is no tight seal to prevent them getting through so I don't even understand how this would actually filter correctly.There is a foam padding for the nose bridge, but is this also PM2.5 rated? If not, surely the particulates are just getting through here as well.