3M Rugged Comfort Half Facepiece Reusable Respirator 6503, NIOSH, Cool Flow Valve Helps Reduce Heat and Moisture, Silicone Faceseal Provides a Firm Seal, Welding, Sanding, Cleaning, Grinding, Large

I couldnt tell you the model of my old 3M half face mask but this one seems to cover more area leading up to the breathing zone on my face and it seems to seal a lot better. I know my comparison is to my old one that I have had for years but I'm just saying. The main thing I liked is that while I wear it and I have on safety glasses also, my safety glasses aren't getting all fogged up just from me breathing like my old mask would do to me. To me that spoke volumes to how this thing seals. I actually came back and bought a smaller size mask for my girlfriend for when she gets carried away with the spray paint on her crafty whatever stuff. Something about refinishing rustic furniture maybe, idk what she calls it. She goes through probably 7 to 10 spray paint cans a month. I feel a lot better about her respiratory system with this mask on her face.

I'm a guy with a big face and they fit my face perfectly, they adapt perfectly to the P100 filters, they are size L. Take care of your health my friend.

I've been using this mask with the slim pink P100s that fit under a welding mask for welding and plasma cutting. It is great. I had the garage door open, fans going, took a break - went back in without the mask and the smell hit bad. I put the mask right back on. Sweaty, hot, but it COMPLETELY blocked all the fumes. It was great.I tried a medium from an in-person store but the valves vibrated obnoxiously - getting this in small was the solution! A good fit is key. Make sure to do the no-filter test with the filter spots covered to make sure you get a good seal.If you can smell anything through the mask and you did a seal check first, then you need new filters or better filters for the job. If you can smell anything this mask is not working 100%.This version is NOT the quick release. I would get the quickly release next time because I often work around other people and no one can hear you until the seal is broken - which on this mask is pulling it slightly away from your face with one hand. The value of this mask though is that the quick release gets tighter when sealed, so it is a lot more work to get the straps right; this mask without quick release is a lot easier to get on comfortably.

The mask works well with canisters. I use it for pesticide application, and the correct filters work well. The seal on the skin could be a little tighter if the behind-the-head straps are not tight. It can lose the seal if you are not clean-shaven.

As a safety professional, this is my brand of choice. Keep in mind that you will need the appropriate cartridges for the hazard you will deal with. Also, this needs to fit tightly against your face, but the adjustment on the straps make that straightforward.My main reason for preferring this respirator is the exhalation valve, which directs my breath away from my glasses. Along with the face seal material, that makes for a comfortable respirator. For the price, it is hard to beat.

This respirator size fit perfectly & was very reasonable price - I like the head strap that secures it inplace

Compared to one of the older model respirators from 3m this thing feels at least 10 degrees cooler. My mouth didn’t form a nasty sweat pool like it does in other respirators. Definitely worth a few extra bucks!

Comfortable for extended wear, does a good job of sealing out particulates without the discomfort of a full face mask. Just don’t forget to wear your safety glasses.