Activated Carbon Dust Mask for Breathing Clean Air, with Extra Filters, Excellent for Cycling, Running, No more Exhaust Gas, Dustproof, and Pollution, PM2.5 N99, Outdoor Activities

This mask has been a life saver for me. My seasonal allergies get so bad in the fall that my throat swells up. With this on I can sleep fine without issue. There also was absolutely no rubber smell at all that other reviewers complained about.Getting it to sit on my face right was a chore. The upper part is supposed to sit on the TOP of your cheekbones, if it doesn’t then there is a gap between the bottom and your chin. It tends to slide down over time requiring adjustment from time to time. Having some non-slip strips on the upper cheek portion of the mask that would stick to the face would help solve this problem.Otherwise it works well. I’ve found I can go about two weeks per filter using it for sleep every night without my allergies kicking back up if anyone was interested in how long the filters last. I also wish that the mask were just a tad smaller.

Slight smell when I first got it, not too bad & it went away in a day or two. Gray fabric started to separate from mask within first week. No biggie, I mostly care about function. At that point I'd have given it a 5/5 function, 3/5 quality.Now the ear strap is broken. Function is drastically reduced, and the gray fabric has continued to separate from the mask. Will be buying a different brand, or just go back to disposables. In 8 months I got about 24 uses from this mask. Disposables may be more economical.

I wear a 7 3/8 hat and am 6 ft tall. When the ear loops are in place, the bridge is at eye level. Useless. Still, I will keep it because it works well without the loops under my full face MC helmet. Anti-fog design works well, if used along with an anti-fog spray. No bad odor; good airflow. Face was warm today at 43 degrees.

Good for $10.00 but will fall apart in a year. Ear loops delaminate because they are not sewn. You will still get a year of use and as long as this mask is under $10.00 it's worth that. The filtration is great. In a room with 4 snakes and 25 mice there is no smell. Fit is great until mask falls apart.

The mask fits well and stays still thanks to the earloops and nose bridge that block the mask even when doing physical exercise.I only found a little smell residue of the fabric but it went away afterwashing it as suggested in the leaflet inside.Overall good experience, I enjoyed it using it for cycling and jogging.

I previously had bought something similar but it kept slipping down. This one has a loop to engage around ears and thus maintaining it's position. Filters all dust from my woodworking, and does not restraint breathing.

Mask is well made but I can't use it due to the heavy rubber smell. I followed instructions (and other buyers' advice) and soaked the mask in water 3 times, starting # 1 hour (1st time) up to >24 hours (3rd time) . Mask still smells like inside of a tire, making it unusable for me.Buyer beware: I don't have a particularly sensitive sense of smell so if I can smell it ... !!!

it was great the first couple months, but then the material started to wear down... and would frequently come undone, while working with concrete that is very bad, so only 2 stars...