The UpClose G2 8x21 Roof Binocular (Clamshell Packaging) from Celestron is a light weight 8 ounces with a closed hinged bridge design. At less than 4 inches they are a prime candidate for an easily mobile binocular that leaves no excuse to be caught without some magnification for that surprise situation. The water resistant, rubber covered, aluminum body adds an added level of worry free use from too much rough handling and never too much use. The sure grip furnished by thumb indents and finger ridges are a welcome feature allowing a firm non-slip hold. Just another reason to make sure that this binocular gets taken along.