DESC: Alpen is proud to introduce the Rainier™ binocular series. These binoculars provide the best optical and mechanical craftsmanship available today. From the rugged magnesium body to the ultra precision ground and polished optical elements, Rainier™ delivers the best premium-performance. All optical components receive our exclusive UBX™ multi-layer coating for maximum light transmission. The extra large BaK-4 prisms are coated with Alpen's SHR™ metallic and PXA™ phase coatings to deliver the best in brightness, clarity and color fidelity. Large diameter lens elements throughout the optical system provide enhanced field of view and eye relief for easy viewing.