radium pro: best adaptability and style. the salomon radium pro sigma goggle is just right for all mountain fans who place particular value on adaptability and style. the multilayer lens reduces glare and improves terrain awareness, three layers of foam keep you comfortable from dawn to dusk, and anti-fog and anti-scratch technology ensure clear vision at all times.sigmaâ„¢ black gold lensthe sigmaâ„¢ lenses provide better contrast vision so you can see the details of the terrain more quickly in all lighting conditions. this lens is perfect for sunny days.vlt 12 %