Alpen Wings 8 x 42mm Waterproof Roof Prism Binoculars deliver a user friendly ergonomic approach to optics viewing. Great optics is achieved through the use of fluorite glass which provides the very best in color fidelity and contrast in all light conditions. This Binocular is designed to be lightweight and maintain detailed optical performance. Alpen's open hinge design provides comfortable handling. It is completely multi-coated and has PXA phase correction coating.