The Nikon 10X25 Sportstar EX features roof-prism binoculars boast a contemporary design that is both appealing and practical to users. They are compact and lightweight, and thanks to their twin-hinged, foldable design the two models are easily portable. Both the 8x and 10x models are waterproof and fog-proof and can be used in a whole range of outdoor activities and weather conditions, including walking and mountaineering.