The X-Lite Pinlock Insert is a high quality Pinlock Insert for use on X-Lite X-1004 / X-1004 UC helmets.Patented anti-fog technology in the global market.Pinlock offer 3 different performance levels.Pinlock is used by professional riders in motorcycle racing series.Silicone seal which creates a double shield systemDry hydrophilic technology.Pinlock is well known for it s patented anti-fog technology in the global market and is expanding. Pinlock offer 3 different performance levels in our range of insert lenses, to enable everyone to enjoy a clear and fog-free vision when riding. The insert lenses range starts from the Pinlock 30, Pinlock 70 and Pinlock 120 lenses. The number is used to describe the levels of fog free clearance the insert lenses provides in order to acclimatise to temperature differences that cause helmet shields to fog up. Pinlock 120 is the top of the line fog resistant solution for professionals. There is a slit on the side which keeps the insert lens steady and tig