This clamshell mossy oak treestand Leupold BX-1 Yosemite 8x30mm binoculars feature a synergy build, smooth diopter focus, twist up eyecups, L-Coat BAK4 prisms, waterproof rugged armor, porro prism design, narrow interpupillary distance, fully multi-coated lenses, and a close focus distance of 10 feet. Leupold BX-1 Yosemite 8x30mm Clamshell Mossy Oak Treestand 67740