Binoculars are two identical telescopes placed side-by-side that are designed to point accurately in the same direction.Binoculars come in different sizes and shapes to suit different purposes. Widely used for stargazing, bird watching, hunting,and fishing, binoculars are of great use to sport and nature lovers. Binoculars can be carried anywhere with you, from theatres to forests, from lakeshores to playgrounds.It is important to protect binoculars from dust, mist, rain, fog,moisture, sunrays, fire, and fingerprints. Waterproof and fog-proof binoculars are now available. Nitrogen-filled binoculars resist water, rain, and moisture.Many people prefer to carry binoculars around freely, rather than in a case. Fortunately,the new weatherproof binoculars are fit for rough use. But the optical surfaces still need protection from scratches and other damage. Under such circumstances, binocular lens protectors have to be used. Lens caps very often get misplaced, so binocular companies attach lens caps to the binocular. The latest binoculars come with attached lens protectors so that you can use them year round, regardless of time, climate, or season.

Binocular lens protectors drive water off the lens surface of both objective lenses and eyepieces, helping eliminate glare caused by water droplets. Water-shedding lens protectors have a special coating that allows water droplets to bounce off the surface, which helps reduce repeated cleaning of lens. Most binocular lens protectors are replaceable. Thus, after years of wear and tear, a new cover gives your binocular lens a fresh fortification.Some binoculars come with special fire coating on the lenses. This special fire coating employs advanced technology that is designed to eliminate both infrared light and ultraviolet rays. Many binoculars come with a front cover, which protects binoculars from the rays of the sun.
 

Source: Promotional Binoculars,  Monocular Telescope