Designed to fit Shoei Helmets that have CW-1 stamped on the top of the visor including the XR1100, RF1100, Qwest, X-Spirit 2 and X-Eleven. This is the most effective anti-fog system you can get for your Shoei Helmet Visor.The New ProcTint UV Light Reactive insert is now available with unique Photochromatic features. Changes colour in a matter of seconds.