Pinlock offers a great solution against shield/ visor fogging.The Pinlock original insert is made of a moisture absorbing plastic and because of that you won\'t get any fog on your visor. The insert has a silicone seal that creates a double shield system. The Pinlock visor is suitable for the Skwal and Spartan Helmets. Clear: This clear insert is now being supplied with the helmet as standard by most helmet manufacturers. This insert offers you clear and fog free vision under normal weather conditions.