I can work comfortably I have both a gray and a pink mask that I rotate at work. Great deal with no leaks. I’ve developed an allergy to N95 material (cough/wheeze/coryza) which makes wearing a traditional N95 mask undesirable. The smaller insert in the Castlegrade mask, and the distance that the filter sits away from nares and lips, make this option doable for me. I bought one for my medical assistant too.

Materials look great and quality seems… Materials look great and quality seems good. Unfortunately it simply wouldn’t fit my face without leaking, nor my wife’s, nor my brother in Law’s. So, not safe enough to use for us in this pandemic, particularly with me working in the hospital. Too bad. I understand why returns aren’t possible during a pandemic, but a little bummed to spend the money on a product that we’re unable to use.

Design problems and poor fit around nose I've tried lots of disposable masks but this is one of only two elastomerics I've tried and for me it's unwearable. I have a small female face and bought the small size. Issues are: 1) the attachment point where the headstrap meets the mask body (only one) is positioned so that the "rim" of the mask is pushed hard against your face and this pushes flesh against teeth inside the mouth. The standard length strap supplied with the small size mask is too short; even on the longest setting, meaning strong pressure against the face. Very uncomfortable. 2) I could not get a good seal around the nose, reliably, no matter what I tried. I have a small and narrow nose and the mask gaped no matter how I positioned or tensioned it. 3) The strap is single where it attaches to the mask, then divides and is supposed to go one strap above and one below the ear. But the two sections of the strap are not independently adjustable and the lower strap sags and the upper strap slides down over the ears when you have long hair, and ends up too low on the head. If the higher strap is positioned above the occiput as is usual for N95 masks, the angle is wrong and because of the single attachment point the mask gapes even more around the nose, while the lower part of the divided strap, again, is loose. 4) The surface area of the filter through which air can pass is very small, meaning that there is high breathing resistence. 5) It is almost impossible for people to hear me speaking in this mask. 6) I have not worn it for long enough to be sure, but I suspect the mask would accumulate condensation if used for long periods; it feels clammy even after a few minutes. Including postage I paid $80AUD for this, and I regret the purchase. I did not bother contacting castlegrade to express dissatisfaction with their product as they were emphatic with their "no returns" policy. Unusually these days, there was no followup email to seek feedback.

Quick and personal responses to my… Quick and personal responses to my email questions and concerns. Quick shipping. Mask works very well. Makes me feel safer than any other mask against the delta variation of the coronavirus. I love that it is reusable to save the environment from single use masks. I highly recommend this mask. My son and his wife and two children also recommend them especially since one of the boys has asthma which is viral induced and cannot risk getting Covid. I love that the mask is now FDA approved as well.

Seems well-made and comfortable Product arrived quickly and seems to be quite well-made and as if it will be comfortable to wear over time. I haven't given it a real try yet as I purchased them with an intent to wear in more "risky" situations and/or if someone in my immediate family gets sick, as opposed to everyday use. That said, I'm happy to have something more effective on reserve should either of those situations arise.