The Pinlock is made of a special, moisture-absorbing plastic. The silicone seal on the Pinlock provides an insulating air layer between the Pinlock and the visor and thus prevents fogging of your visor.
Developed to eliminate fogging in demanding weather conditions. The Pinlock EVO creates a double shield system through a silicon seal between the visor and Pinlock insert lens, which makes up a double glass type of solution that prevents fogging. The insert is made of a moisture absorbing plastic and therefore, the surface basically dry when used.