These Eyeglasstor Safety Goggles have a very good system for providing anti-fogging qualities…there are four factory punched holes around the shoulder that have rubber grommets inserted. These grommets have a design that looks like a “roof” covering the hole. The design allows ventilation within the enclosed area of the goggles while wearing them. It’s much better than just an anti-fog coating on the lenses.The lenses have a protective film attached to both sides…it has to be removed before use. This is a blessing because it does protect the lens when new, but the curse is that the film is difficult to remove. Removal is impossible with gloves on. To get at the edge of the film (to get a grip for peeling), you have to bend back the lip of the goggles and then pick at the film to get the edge to lift.The strap is adjustable. It comes pre-threaded through the goggle’s strap attachment points. The way it is threaded through makes it hard to adjust…but it does not slip and loose adjustment either. I found the pre-adjusted length to fit me just fine without having to do any adjusting.These have no problem fitting over glasses…lots of room.I was wearing these the other day while sanding some older 2x4s that had a lot of wear on them. When I finished, I was surprised to see so much dust on my body. There wasn’t any problem with the eye area though…thanks to these comfortable goggles.