The Cairn Focus OTG is a ski mask with interchangeable lenses. It features a double panoramic spherical lens, anti-fog and anti-scratch treated. It comes with 2 very easily interchangeable screens, the frame being equipped with MGT Magnetik System technology. This allows you to change screens without even taking off your ski gloves, thanks to a highly efficient magnetic system. The 1st category 3 screen proves its effectiveness in bright conditions on sunny days. Orange in color, it guarantees bright, high-contrast vision even when the sky is covered by a few clouds. This cat. 3 screen has a Silver mirror coating that effectively reduces reflections on reflective surfaces such as snow. The 2nd screen is yellow and category 1. It's a bad-weather screen that's ideal when weather conditions deteriorate, when it's snowing heavily or fog is invading the slopes. Thanks to these interchangeable screens, the Focus goggle lets you make the most of every day in the resort, ignoring the weather which, in the mountains, often changes very quickly. The Cairn brand has also equipped this goggle with triple-density foam that gives you great comfort around the face. Note also that the Focus is an OTG goggle, meaning it's specially designed for eyeglass wearers thanks to a side cutout. Finally, it's compatible with Cairn ski helmets and Glisshop recommends it for size L faces. This description is an automatic translation. Please contact us if you have any further questions. Goggles Cairn ---Focus Otg Mat Black Orange Spx 3000 + Yellow Spx 1000