NBDIB 4 Pack Adjustable Reusable Face Protection with 8 Carbon Filters and 8 Valves for Cycling Sport Black

I’ve tried several different masks for outdoor activities, but the NBDIB Adjustable Reusable Face Protection has easily become my favorite, especially for cycling and running. With 8 carbon filters and 8 valves included in the pack, these masks are designed to provide serious protection while allowing you to breathe comfortably. What I love most is how adjustable they are. The fit is snug without feeling restrictive, which is key when you’re moving around a lot. I used these masks regularly while cycling through busy city streets, and I could instantly feel the difference—the carbon filters really block out dust and pollution, making breathing so much easier. The added valves also prevent that annoying buildup of moisture, so no more soggy mask by the end of a ride! Plus, with four in a pack, I could swap them out and always have a clean one ready to go. Whether you’re cycling, working out, or just navigating crowded areas, these masks are a solid choice for staying safe and comfortable.

Very thin product. Not quality manufacturer as any normal person expects when looking for this type of health care.

So you get what you pay for and overall it's not as bad as some people have said it is. I did want to say that some people were saying that the vent is not safe when around other people cause it doesn't have a filter, well that's not true and I wish more people had common sense. So my filters came with a little filter piece you push out to put the vents through, well take that little piece and put it in the bottom of the vent piece that goes on the outside of the mask and now it has a filter and works the same way.

Bought these thinking I was getting masks. Apparently I enrolled in a class. I pulled out ONE outer valve, didn’t realize the rest of the pieces were still in the bag, and spent entirely too long cursing this product, Amazon, and life in general. Then I discovered the filters and inner valve pieces hiding in the package. And because this mess came with NO instructions, I had to make my own how-to guide. So yes, the masks work great. But apparently my purchase also included homework and a surprise engineering assignment. 😂 5 stars for the masks. 0 stars for the syllabus.

These masks don’t work!! The inner liners won’t stay attached to masks Tried more than one and none would work!! Dissatisfied!!

Used these in my AP bio classroom for fetal pig dissections and I couldn't smell a thing. It might take a moment to figure out how to put it together, but once you have that down they work amazingly

Great masks. Good quality easy to put on don't get in the way of anything. Will buy again

So the first thing I noticed when I opened this package is a pretty glaring flaw. There are NO ASSEMBLY INSTRUCTIONS. Especially when it comes to products that are made for people's health and safety, if there is ANY assembly whatsoever, it needs to have instructions. It took me a little while to figure out how to put this thing together in a way that was functional. The filter has no way of being secured save for with the valves which have been shown in other reviews to have issues falling off. Not hard to believe since they only are secured with a single quarter turn. I can definitely see these coming loose, especially in hard workouts or labor. I am an average sized woman and I struggled with the fit of this one being a little too big. Even with the strap in the back, it was constantly shifting and I was constantly having to readjust. The fabric feels really cheaply made and I would really like to see a way to actually slide the filter between the layers of fabric to better hold it secure in the future. The one positive I can say about it, is that it IS easy to breathe in. However, I'm not sure if that's necessarily a good thing. It doesn't feel as though the breaths I'm taking are actually going through the valves or filters at all so functionality-wise I'm not sure how well it is working as more than just another simple cloth-barrier mask. I'm going to be modifying it, personally. Sewing the filter in place or either cutting a small opening in the fabric layers to secure it in place. Pretty disappointing overall, truthfully.

product is great.