Please Note We are not allowed to ship this item outside the EU. The CWR-1 is copatible with the following helmets X-Spirit III NXR Features The photochromic visor is darkening on exposure to ultraviolet radiation Photochromic visor A self-tinting visor is the most comfortable way of effective sun protection. The world s leading manufacturer Transitions has developed exactly this. A chemical reaction permanently adjusts the tint of the visor. The CWR-1- photochromic visor automatically darkens depending on the intensity of sunlight (= UV light). This makes both possible to ride in cloudy weather, in bright sunlight & in the dark without changing your visor. The "photochromic" reduces 100% of the UV rays that are equally harmful to eyes & skin. This visor makes it kind of a variable sunscreen for the eyes. How fast this can be done also depends on the temperature, since the warmer it is, the faster the molecules can move & thus change. In good weather it only takes about 40 second...