Review (4/5): Handy and helpful but not quite perfect
I purchased this item because I am a teacher and did not enjoy sucking in my mask when breathing and felt like my students sometimes had a hard time hearing me. For these things, it is AWESOME!!! I even gave one to my principal who also loved it for those same reasons! What I do not care for, however, is actually feeling it sit on my face. It is less hot than the fabric being directly on my face, but where my skin and the plastic connect, it does sometimes get sweaty and sometimes my mask will slide down. These do have small "clips" that would definitely allow you to put a stitch in your mask that it could slide into to hold it in place of you felt so inclined. Though these are not ideal, they are pretty perfect given the circumstances and I would certainly recommend them.