Nikon Prostaff binoculars are 100% waterproof and fogproof. They are compact and lightweight and have aspherical eyepiece lenses that provide crisp, distortion free field of view. With a long eye relief for eyeglass wearers and rubber armored, polycarbonate body the Nikon Prostaff are one of the best on the market. Eco glass lenses and prisms for high performance and weight savings. MPN: 7486