The Rain Forest range of Binoculars are nitrogen filled, which makes then waterproof down to 1.5 metres and because they are ultra compact the Danubia Rain Forest Pocket Binoculars, it means that they can be carried easily all day long and folded small for storage, due to the double hinge. The full rubber casing provides a great grip on the binoculars, even when wearing gloves and also gives added protection to make the Rain Forest II extreme durable and tough. The BAK-4 prism and multi coated optics provide bright and sharp images even if the light is poor, which means you can carry on using them at dusk or dawn, or on a dark winters day. The well placed, fast central focusing wheel makes follow focusing a subject really straigh forward and once focused, doesn't require any more adjustment. The optics are Nitrogen gas filled which ensure a fog-free viewing and also make the Rain Forest II Binoculars waterproof down to 5m. Sold with strap, nylon case and lens cloth.