Wind River Olympic Series Binoculars These premium quality, 8x42mm, Center focus, phase coated roof prism binoculars offer you a bright, clear sight picture, twist-up eyecups and long eye relief for easy use with glasses. Rain Shed helps ensure clarity, even when wet, through hard rains. Even total submersion won’t affect the interior workings of your rugged, totally waterproof Olympic series binoculars.