great features in a clear, elegant design. the r1 otg was inspired by the design of the rvx mag otg and is perfect for anyone looking for a simple and elegant look. as the name suggests, the r1 otg can be worn over goggles and features lumalens color-optimized lenses.lumalens® rosegold ionlumalens® technology offers optimized colors and glare protection thanks to an ionized lens coating. the hard coating is scratch-resistant and repels dirt, dust, oil, and water.light transmission: 42 %