Arai DKS116 Pinlock Protectint Insert For XD3/XD-4 Helmet - Sun ReactiveArai DKS116 Pinlock Protectint Insert The Pinlock ProtecTINT fog resistant insert lens is our premium solution for Arai helmets. This lens has become the benchmark for fog resistant performance that is most commonly used by riders across the world. The insert is made of a moisture absorbing plastic and, therefore the surface basically dry when used. The insert has a silicone seal that creates a double shield system. From clear to dark smoke in a