Leupold 10x50mm Wind River Olympic Roof Prism Green Ring Black Binoculars 54205 deliver the kind of performance birds haven't thought possible in a binocular that is both affordable and lightweight. Leupold Green Ring Olympic Binoculars are light (only 25.7 oz.) and well-balanced enough to use as your full-time birding optics. When you start identifying birds altogether, you'll be glad you have that added power of Leupold 10x50 Wind River Olympic Roof Prism Binoculars without the added weight. Color fidelity, brightness, and clarity. Close focus distance, Twist-upeyecups and ample eye relief. Built rugged and 100 percent waterproof.