The Vortex Optics Sheltered Wings Viper HD Binocular 10 x 42 (SWVPR4210HD) has a high density extra-low dispersion glass that creates high definition images all the time. This award winning binocular has an XR fully multi-coated lenses that gives impressive crisp details with great resolution. Its lightweight and sleek design offers convenience when you're out hunting. This kind of binocular is a full-size gear but still great to bring anywhere for your successful hunting journey.