NBDIB 4 Pack Unisex Adjustable Reusable Dust Face Protection with 8 Carbon Filters and 8 Breathing Valves for Bicycle Riding Running Cycling Outdoor Sport Fashionable Printed

Pretty comfortable, they were actually in slightly different sizes and 3 of the 4 were just a little too big* for a large mans face. *Due to the length of time and office setting they are usually worn in I usually do not strap the back velcro together and instead just fold them inside of the mask, which means that it is only held on by the ear straps* The metal nose piece is also useful due to the ability to shape it as required, but it seemed to be in an awkward spot, maybe this is because I usually do not tighten it to my fact with the back straps.

I've this type of mask about 5 other times. These are first ones where it's almost to big for my head

The rivets on the nose piece for the adjustable nose come off and they’re not held on with a big enough washer on either side of it so they come pop right all the materials

This is a good mask for filtering your breathing air. However, this doesn't stop a person with a potential respiratory infection from spreading the infection. There are one-way valves which allow your breath to exit the sides. So if you purchase these with the expectation of controlling COVID, then you'll need to purchase inserts which do not have the breathing holes in them, or wear a surgical mask underneath them.There is also a break-in period during which the mask won't be comfortable or conforming to your face, after which these will work very well. Bear in mind these are sized for an average adult, so they're not a good fit for children or smaller people, and will be somewhat tight for later people.

I received 4 masks and 2 were defective - 50% defect rate. There was obviously no quality control on these masks. I've received similarly made masks with no issues. After I assembled the third set, one of the air vents fell out as soon as I lifted the mask up. The hole for the vent was cut too big and when the nut for the vent was secured it wouldn't hold the material tight, but instead the vent fell right through the material. The fourth pair was just as problematic. The two holes were cut very jagged like my three year old grandaughter cut the holes out. Truly it appeared someone manually cut the holes out of the material and did a very poor job. I was very disappointed with this purchase and won't ever purchase this brand again.

My friend who passed away wanted these masks and I still have his. Great quality

The vented hole covers were not on the masks and fell off which defeated the purpose of having basically a mask with holes.

These are awesome masks!! Quality material and comes with plenty of filters. Another great product to help keep my family safe through the covid-19 pandemic. And the designs are very cool.