Compact, lightweight, and with crisp visuals, the Vortex Optics Vanquish 8x26 Binoculars are perfect for birding on the go, whether you're hitting the trails on the weekend or can't bear to travel without enhanced vision on a backpacking trip. The Vanquish uses a reverse porro prism, which delivers a rich depth of field and three-dimensional images, and high quality glass that's been multi-coated to render images bright, clear, and reflection-free. O-ring seals within the case prevent moisture and dust from getting in, while nitrogen gas keeps your vision fog-free. Rubber armor on the binoculars ensure that they won't slip out of your hands at an inopportune moment, while the adjustable eyecups twist up and down for comfortable viewing with or without glasses.