Compatible with ICON Alliance GT, Alliance, and Airframe helmets. With the idea of creating a versatile anti-fog solution, we collaborated closely with Pinlock® to integrate their system to our Pinlock® Ready Optics Shield, allowing the Pinlock® sheild insert to be installed or changed seamlessly.The Pinlock® Pins that are integrated to Pinlock® Ready Optics Shield are designed to be eccentric, allowing riders to adjust the tension of their Pinlock® insert lenses, that increases the grip of the silicone seal on the Pinlock® visor to the helmet visor. The Pinlock® Ready ProShield works in conjunction with the Pinlock® ProShield Insert Lens (Sold Separately) available in Clear and ProtecTint™. example picture