I was picking up some Spares from Metropolis ( bike dealer Vauxhaul, London) recently, and enquired about the price for a replacement visor for my Shoei. I was offered a standard replacment or one with the Pinlock (tm) system fitted. This Pinlock system has an secondary smaller visor fitted on the inside of the normal visor : It has a transparent flexible hard silicone bead that creates an airtight chamber between the two visors Unquote. [URL]http://makeashorterlink.com/?Q3D8257A6[/URL] I was sceptical, and asked the Salesperson " Does it work ? Have YOU used it ? He assured me he had and it was a good thing, so I bought one. After a weeks commuting, 30% in the rain and on chilly days, I can only say I am impressed. It doesn't fog up. At all. I find that I don't have to open my visor at the lights to demist, or adjust breathing when slow filtering. The only downside is the slight reduction in visible area but, I was checking this, today and the edges start below my handle bars and end wellin the sky. not much of a problem on a non sportsbike. Anyone else use them ?