AGV GT4 K1-S VisorPinlock Fog Resistant Visor inserts ensure you have a clear view whatever the weather conditions. Pinlock is created out of a moist absorbing plastic and the silicone seal on the Pinlock creates an air tight double visor. It is easy to fit placed between two adjustable pins and the system is interchangeable making it easy to switch visor inserts when the weather changes. Pinlock can be used all year round during hot and humid conditions and wet; cold