Alpen Kodiak Full-Size Binoculars - Kodiak binoculars produce luminous images rich in contrast and color through a combination of fully multi-coated optics, premium BaK4 prisms and a generous 42mm aperture. Kodiak binoculars deliver excellent views of the details sought by birders, sports enthusiasts and outdoor adventurers of all types. The binoculars in this series have a durable rubber armoring for a steady grip and are sealed and nitrogen-purged to create an internal environment that is both waterproof and fogproof for all-weather performance. They also offer above average eye relief so eyeglass wearers can enjoy a fuller field of view, twist-up eyecups and a tripod thread. Waterproof BAK4 Optics Long Eye Relief Fully Multi-Coated Rubber armoring for protection and durability Twist up eye cups Cleaning Pen Included