The National Geographic 8×21 Binoculars are designed to encourage on-the-go adventure. These pocket binoculars feature a roof prism design that is easy to manipulate for proper eye distance. Offering a field of view of 413 feet at 1,000 yards, these binoculars magnify subjects eight times their standard observable size making them an ideal beginner tool for bird watching or other wildlife observation. The binoculars also come with a case, strap and cleaning cloth. Lightweight and compact.