The masks fit great but there is a strong chemical smell so I opened several and left them out for 2 days and most of the smell has dissipated. Smell appears to be coming from the glue holding the foam strip that makes the masks comfortable. I think it will be tolerable now.The main reason for not liking them is very important, the way the head straps go around your head. Maybe I'm just not use to them (usually get the ones that go around the ear) other than that well made very nice.The straps on many other N95 masks break after one use. These masks have substantial straps that withstand multiple uses. my ears are no longer sore due to the "planned obsolescence" of other masks where the straps always broke and smacked you right in the ear.. Good job and kudos to whoever designed this one.I LOVE LOVE LOVE this mask. I am super-fussy about most things (my nickname is "princess and the pea" haha). I am also super-sensative about smells, discomfort, etc. This mask is SO comfortable whether you wear as instructed (head bands) or use the hack I am going to share.Let me start by saying that I am a high-risk cancer patient with CKD and I must avoid COVID at all costs. I also have high-risk elderly parents that I want to protect. So a tight seal around my nose and mouth is critical. The common paper surgical masks do not offer the seal that will protect me or others.This mask is COMFORTABLE. It is light but sturdy, folds flat, but not flimsy, individually wrapped so I can carry spares for myself or to share others when needed.I wondered what the green clips were for and almost didn't order because I thought they were ugly. (White clip option would be amazing). But once I received I had an ah-ha moment. The clips allow you to adjust the elastic length to your head, a rare feature not found in many other masks.I go to the salon for a weekly blow-out because I can no longer style my own long hair and refuse to cut it off! But authentic N95 masks use headbands, not ear loops (if you have an N95 mask with earloops it is said to be counterfeit, as NIOSH will not approve them with earloops,). Obviously head staps do not work when getting salon services, and I needed a way to wear an N95 mask and still optimize my protection. I need to be able to take down the earloops while getting shampooed and hold the mask in place with my hands and then quickly re-secure the ear loops when the sink service is done. And I want NO GAPS!***THE HACK ***Those green clips are amazing! You can detach the elastic and reconfigure the mask to work as an ear loop mask. I have tried this with other masks and it doesn't work because the position of the strap doesn't line up with your ears and the mask pops off. But this mask is different. Because those green clips branch the elastic in 2 slightly different directions, there is no issue aligning to your ears and it STAYS IN PLACE WITH A TIGHT SEAL.My husband is I bio-scientist and he helped me test the seal when using ear loop hack and there was virtually no difference in protection, seal, and coverage.I KNOW I KNOW, this is not how an 95 mask should be worn. But if you have a special circumstance or need a short-term solution for ear loops, this is the ONLY mask I could find that accommodates.Regarding all the reviews that mention a strong chemical odor, I do not experience this, even after just unwrapping. I do smell a very mild paper odor, like a sheet of notebook paper, that dissipates after about 30 seconds.I hope this review helps others!!!The mask worked as expected. However, even with the foam nose support, I found it uncomfortable on my nose for wearing all day. It was fine for a few hours.I really like buying these as I work in LTC and the masks they supply as work irritate my face. These masks don’t irritate and aren’t cheaply made. Also they are great value for price compare to what they cost during the height of Covid.It's super nice, but only for wearing in short intervals. Tried to wear it for a few hours, but there's a very sharp spot under the chin where the two sides meet. It hurt SOOO much. I tried snipping it off, but there was just more underneath it. I finally placed tape over it, and it helped, but the tape didn't want to stick well as the mask is fabric-like. All the other ones in the box did the same thing.My wife works at a hospital food service. She has to go around Covid patients and she depends on the mask. The nose piece isent the same and cause irritation.. These don't plus they are lot more comfortable. Because when in those rooms you need to not be adjusting your mask so comfort makes a big difference.