SUSTAINABILITY: Constructed from environmentally friendly Eco-Glass(TM) without arsenic and lead DESIGN & DETAILS: Compact, high-quality binoculars perfect for any outdoor activity Ergonomic body design provides a comfortable hold for all day use Aspherical multicoated Eco-Glass(TM) lenses aid in delivering a flat field of view while enhancing brightness and image clarity Turn-and-slid rubber eyecups enables easy positioning of eyes and provides a comfortable viewing during extended periods of time Durable rubber-armored coating is built to handle almost any type of environment Smooth central focus knob allows for fast and smooth range BaK4 Porro prism systems provide brighter image viewing in any lighting condition Clamshell packaging