The orros 8x25 binoculars from vanguard offer advanced optical performance in a lightweight compact design with bak4 prisms and multi coated lenses they are designed to provide impressive light transmission and deliver crisp detailed images nitrogen charged they are 100 waterproof and fog proof and have no slip armour to allow them to be used no matter the weather conditions the compact vanguard orros 8x25 binoculars are perfect for carrying in your pocket and using for hours on end in