Mask was comfortable and glasses did not fog. Definitely notice the difference in filtration vs other mask and would buy again. Only downside is my adjustable nose piece broke on one side i feel there is a need to add some form of plating around the entry point to prevent tearing.Only downside is that it is a little restrictive to inhale but that is expected with a good filtration. Don't over exert yourself while wearing this mask. Custom nose piece keeps my glasses from fogging up.Perfect mask for woodworkingNo issues with mdf and plywood cuttingI love itAs a woodworker in sometimes hot weather I had a difficult time wearing a mask until now! Of all the masks I’ve tried this is light weight, doesn’t fog up my glasses and the nose piece is adjustable. I also like the single strap behind the neck and find it easy to breath with the two vents. The only minor complaint is the bridge of my nose hurts at times but think that’s me putting it on too tight or the nose adjustment was changed from being careless. I’ve tried several masks and this is the best!Easy to go on and I am able to breathJust used it a few times so far but seems very good. Well made, comfortable. larger size than I first thought is a good fit but that is subjectiveEasy and somewhat comfortable. Glasses do not fog!This is my 3rd RZ mask product and is almost as comfortable as the M2.5 , in size XL , but the fit is just as good . My first RZ product is a first generation neoprene (M1 ) , in size large , fits a little too snugly and needed the extension Velcro strip (included with all but M2.5 masks as they don't use Velcro ) to allow it to be all day comfortable. The mesh ones are a LOT cooler in the summer humidity of Virginia outdoors than neoprene but even their neoprene allows fresh air to touch your face where the inner filter isn't touching. This is where a good fit can be a good or bad thing. Good fit of the filter elements keeps more stuff out but that also includes a cool breeze and inhaled air when being very active . Things like running, biking, heavy lifting, etc cause me a slight discomfort as if I'm wearing an oxygen deprivation mask but the F3 or F2 filter elements really help. Is it as free breathing as no mask at all ? No but there's also never a sensation of a need to gasp for air after taking the mask off. The cheaper masks I've used that didn't fit well allowed more fresh air but because it was bypassing the filter to get in . The RZ F2 or F3 truly do reduce the resistance a great deal as I found out back in January when I was diagnosed with asthma but it turned out I had imminent heart failure and I was using the neoprene one at work to warm the air I was inhaling. The F1 (comes with all their masks ) left me gasping for air at times when moving very heavy objects at a fast pace at work but the F3 and F2 I bought reduced it a lot.After conquering the widow maker I'm ok with the F1 filters that came with my M2 and M2.5 but still enjoy the F3s I bought the most.The M2 doesn't feel like it's pulling down , like the neoprene one does after a while , and I believe it's because I got the right size. My measurements were right between L and XL so I erred on the side of XL this time vs L with the neoprene one .Filters from others won't fit right but of a great for isn't important they'll suffice in a pinch. I've tried the filters from other masks and they aren't as large plus the vent hole isn't exactly right on either side.The reason I prefer this brand over any others is the F2 and F3 filters. Other than that Base Camp brand mesh fits just as well as this one and is just as comfortable at a little better price but the RZ M2.5 with F3 filter wins hands down for my needs in a dusty, fast paced work environment.Fits great with a little gap at the bottom. I have a 4inch nose to chin. So if I was to buy again I would go for a size down. Medium down to small, and also easy to replace the filter. Way better then a normal respirator.Fogs up your glasses, so uselessdoes what it says on the tinUnderwhelmed. Sizing is on the smaller side. Definitely go with a size larger than what the guide recommends.Construction is very good, we'll put together. The included storage bags isn't totally garbage.Definitely not CSA approved, should only be regarded as a dust mask. The manual says it doesn't protect against Silica dust either.The product came as advertised and is very comfortable to wear. I bought this for woodworking because my other high-quality face mask respirator has 2 straps so I have to undo both to temporarily take off vs being able to simply slip it down. It also leaves deep lines on my face and that's annoying. The RZ Mask is easy to put on, slip down, doesn't leave marks on my face, and it's easy to breath through. I don't have a big head/ face and I bought the large.