The Nikon Action Ex 10X50CF is waterproof Binoculars with nitrogen gas filling ensures fog-free performance in any environment. Convenient eye positioning is guaranteed by ergonomic rubber eyepieces. The high-eyepoint design provides a clear field of view even for eyeglass wearers. The lenses incorporate multi-layered anti-reflective coatings for a clear and perfectly sharp image. The Turn-and-slide rubber provides shock resistance and a firm, comfortable grip.