They're comfortable and light weight. They basically work like sunglasses. They fit well over regular glasses. I'm currently wearing this every time I go out of the house and pleased with it. I often forget that I have it on and try to touch my face, only to discover that the shield is in the way.It does tend to fog up around the nose and mouth, but generally not as far up as the eyes, so the fog doesn't interfere with vision. The only time I had a problem with fogging was in the refrigerated room with the milk and eggs at my warehouse super store. Then I think it was mostly my glasses that fogged up under it, not so much the shield.Remember to take off the protective film! The optical quality is much better without it.They do go up a bit past the eye brows, so, if you're wearing a sun hat with it, it's going to interfere a bit with hat. I definitely wouldn't wear them with a hat with a brim unless you have a tie under the chin. I get by with a sun hat that ties under the chin, but, in a stiff breeze, I have to hold the brim to keep the hat from blowing off, because the mask pushes it up.