3M N95 Respirator 8511, Cool Flow Valve, 10 Pack, NIOSH-APPROVED, Advanced Filter Media For Easy Breathing, Comfortable For Long Periods Of Wear, Helps Filter Pollen, Mold Spores & Dust (8511PB1-A-PS)

I keep a box of these as part of my household’s emergency and seasonal preparedness kit. They’re NIOSH-approved and reliably made, with a consistent fit and a noticeable difference in breathability compared to lower-grade masks.The Cool Flow valve makes them more comfortable during extended wear, especially in warm weather or while moving around. The metal nose piece molds easily and helps keep the seal secure without discomfort. I’ve used these during wildfire season, dusty DIY projects, and for general respiratory protection when needed.Each mask feels durable and consistent. The straps hold up well and don’t overstretch or snap easily. I’ve tried a range of N95 options over the years, and this continues to be one of the best I’ve used.A product like this isn’t for everyday use in most homes, but when you need it, you want it to work well. This one does.

I have allergies and I sweat like a, well I sweat a lot when I’m working. I have to wear a mask and all of them fog up my glasses and then they get soaked with sweat and I can hardly breathe through them. This mask fixes all my problems with the vent valve and the re-engineered metal strip above your nose, it no longer fogs my glasses. And somehow the way it’s made, it gets soaking wet, but I can still breathe fine through it. GREAT PRODUCT!!! I have worn the first one through three separate lawnmowing’s, and will continue to use it as long as it works and looks clean. So that makes them pretty economical.

Item is exactly as described. Performed well against cement dust and other particulates. Great to be able to not fog up your glasses. A bit of a tight fit, but not a struggle to get on and I have a somewhat larger head.I won't take a star off because this isn't a product problem, but of the 4 boxes I've ordered, each has been poorly packaged and has arrived with some damage from minor dents to ripped. Product has always been unaffected though.

Why did you pick this product vs others?:Much easier to breath with - used for high allergy days

Review of 3M N95 Respirator 8511 with Cool Flow Valve – A Lifesaver During the LA FiresThe 3M N95 Respirator 8511 with the Cool Flow Valve was an absolute game-changer during the recent LA fires. With the air thick with smoke and ash, this mask provided reliable protection, filtering out harmful particles and making it much easier to breathe safely.One of the standout features is the Cool Flow Valve, which significantly reduces heat and moisture buildup inside the mask. Unlike other respirators that can become stifling after extended wear, this one remained comfortable even during long hours outdoors or while navigating smoky conditions. The adjustable nose clip and soft inner lining also ensured a secure and snug fit, minimizing gaps and preventing smoke infiltration.Another major plus was the durability—even with frequent use, the mask held up well without losing its shape or filtration efficiency. Whether driving through the worst of the smoke or simply trying to go about daily tasks in the hazardous air, this respirator provided peace of mind and essential protection.If you live in a wildfire-prone area, work in construction, or need solid protection against airborne particles, the 3M 8511 N95 is an excellent investment. It’s comfortable, effective, and truly a lifesaver when air quality takes a turn for the worse.

I use these at my cleaning job to cut down inhaling the chemicals.l, and dust, mold etc. Makes a huge difference. I feel so much better after. Not the most comfortable or ideal, but worth it.

I wanted a mask to where while mowing due to the dry grass and pollen. These masks work great. I can breathe easily, and my safety goggles do not fog up. They are light weight and I can get a good seal to keep out the dirt and pollen.

The relief valve on mask help reduces sweat, heat, and filter the air.Will buy again.