LAND LENS Contrasts reds, greens, and yellows. Full polarization and high contrast provide increased clarity, revealing vibrant colors, and optimal visibility while on land. SEA LENS Contrasts reds and skin tones from blue backgrounds of the ocean and sky. Maximum polarization to reduce glare of the ocean and water environments. AIR LENS For high-altitude, open-air environments, and activities that require more clarity. Contrast reds from the blue and green from backgrounds. featuring no polarization for maximum contrast.