Pinlock® 70 lens for SMK Typhoon helmets. Pinlock® Anti-Fog lenses The Pinlock® 70 fog resistant insert lens is the premium solution for multiple helmet brands. This lens has become the benchmark for fog resistant performance that is most commonly used by riders across the world. The insert is made from a moisture absorbing plastic &, therefore the surface basically dry when used. The insert has a silicone seal that creates a double shield system. Here you find some information about Pinlock Anti-Fog lenses