40-50mm Binoculars are the most common, which is because they gather a great deal of light while not being overly large. While we have more compact options available such as 24mm binoculars which will fit easily in your pocket, these full sized binoculars are perfect for almost any application. You'll get a bright image and high powered magnification, which makes them ideal for hunting and birding. A 40 or 50mm Binocular has the best balance between size and performance of any binocular in our store, and they are available from the top brands, such as Bushnell, Leupold and Nikon. You'll have a comfortable and high-performing optics if you go with 40mm-50mm binoculars!