Salomon Sentry Pro OTG Photochromic Goggle Salomon Sentry Pro OTG Photochromic Goggle is built for skiers and snowboarders who need clear vision in winter light, bringing the goggles redefining over-the-glasses style and vision to every day on snow. Salomon’s Sentry Pro OTG SIGMA Photo goggles are designed for glasses-wearing riders looking for true OTG goggles that look and feel good. Balancing style and performance they feature a full perimeter airflow, side notches, a greater volume, and one color-amplifying, adaptable SIGMA Photo lens so your vision stays sharp and style bold. Made for over your glasses: To best accommodate glasses, these goggles boast a thermoformed face foam, notches on the frame’s side and extra depth, with a specific ventilation foam that prevents fogging. Durability and convenience: Featuring a frame made with durable and flexible materials and a wide strap with silicone, these goggles will stay in place and last you for seasons to come. Dynamically amplified vision: The SIGMA Photo lens offers a wide field of vision with minimal optical distortion, it amplifies color contrast and dynamically responds to changing light conditions. Amplified vision: Ultimate field of vision, offering a superior vertical & horizontal vision. Easy change: Quick and easy replacement of your lens. SIGMA Photochromic: Salomon’s top-of-the-line SIGMA Photochromic lenses reduce eye fatigue, amplify color contrast and dynamically adjust their brightness to the light conditions on the mountain. Key technology: Amplified vision. Key technology: Easy change. Key technology: SIGMA Photochromic.