Pinlock offers a great solution against shield/ visor fogging.The Pinlock original insert is made of a moisture absorbing plastic and because of that you won't get any fog on your visor.The insert has a silicone seal that creates a double shield system, The Pinlock visor is suitable for the AGV K-3 SV and the K-5 (S) helmets.ProtecTINT™Photochromic inserts tint under the effect of UV light. As the UV light becomes stronger, the insert will tint darker. This means that the Pinlock insert tints from clear to smoke and vice versa under the effect of the UV light. Just perfect during a journey with different weather conditions. Continuously changing inserts will also be a thing of the past.The photochromic material will be activated immediately because of UV light and this means that the insert will have a darker color. This offers perfect vision on the road even when you are riding in full sunshine. The insert will not catch UV light at night meaning the insert will be clear under these conditions. A perfect advantage because you will only need to take one shield with you!