I went into Bike mart 2 days after getting my licence as I couldn't see shit when the visor was down. With all the "CAT" crap and like products on the market, surely there was something that would work. We discussed the merits of each and the fact that they all need to be applied every 2-4 days. Then the owner comes out and says, " I garauntee that this will leave you visor fog free. His words were, "You could have a root with your helmet on and it won't get foggy!" (uncomfortable thought!) So with a little discount and $29 dollars later I rode home to fit the thing. Fiddely to fit as you want to get it perfectly positioned, but once fitted, I was amazed! I walked around the house for 5 minutes, visor down and breathing heavily and the only fog that appeared was on the bottom edge that isn't covered by the screen. It's a screen that creates an air pocket between the visor and it and for some reason works! Technical I know, but I aint no engineer My tinted screen does not have one, and on Sundays ride discovered that it really needs it! It also has the added advantage of being photo-sensitive, so it helps reduce glare. It turns slightly blue when the sun hits it, not enough to block out a summers day worth of light, but enough for those overcast days where then sun comes and goes fleetingly. +1 from me.