Heat from breath makes it too uncomfortable to wear
The concept of this product is great but I think it needs to have larger spaces to allow the air that we exhale escape the cup.  It is quite uncomfortable in my opinion to be wearing a mask in the first place but to then have this plastic cup holding in a lot of the hot air I exhale before it can escape out of the mask is terrible.<br /><br />My mask fits really well and doesn't allow much air to escape in the first place but because of the fabric against my face, it is not a problem.  But this cup just won't cut it for me.  It might work fine for a looser mask that doesn't have a nose wire or if you live someplace that is always cold, but this insert in Hawaii in the summertime is just too uncomfortable.
Rating: 3 stars