The 509 Sinister X7 Goggle is the next evolution of our Sinister series. With its quick-change magnetic lens system, wide field-of-view, cylindrical anti-fog lens, and frame shuttered venting for even more airflow, these goggles are ready to handle a wide range of weather and snow conditions. 5MAG lens retention system Soft goggle frame for unparalleled comfort and fit Hard lens frame insures an optimal fit, and a great sealing with 5MAG Lens Retention System OTG, Over The Glasses, compatible Shuttered Venting in frame scoop air in or closes off flow Easily replace lens for varying conditions Improved tints, low light, and contrast improving technologies including polarized, HCS, and photochromatic also available Clear Tint – Cloudy, Low Light Clear to Light Blue Photochromatic Tint – Partly Cloudy, Low Light Clear to Light Rose Photochromatic HCS Tint – Partly Cloudy, Low Light Clear to Yellow Photochromatic Tint – Cloudy, Low Light El Dorado Mirror Sunset Tint – Sunny Hi Vis Mirror Light Yellow HCS Tint – Partly Cloudy, Low Light Light Rose HCS Tint – Cloudy, Low Light Orange Mirror Light Rose HCS Tint – Partly Cloudy, Low Light Photochromatic Polarized Smoke Tint – Partly Cloudy, Low Light Polarized Smoke Tint – Sunny Polarized Yellow Tint – Cloudy, Low Light Raspberry Mirror Light Smoke Tint – – Cloudy, Low Light Red Mirror Smoke Tint – Sunny Revo Mirror Smoke Tint – Sunny Yellow HCS Tint – Cloudy, Low Light