Bushnell 224208 NatureView 8x42mm Binoculars + Bushnell Powerview 8x21mm Folding Roof Prism Binoculars + Accessory Kit BaK-4 Porro Prisms for bright, clear, crisp viewing Fully multi-coated optics for superior light transmission and brightness Textured center-focus knob for easy, precise adjustments Rugged, non-slip rubber armor absorbs shock