These Field Optics Eye Shields are amazing! If you haven't seen these before, read on....
EYESHILD connects to the eye piece and fits most performance field optics . The patent pending technology is designed to shade your eyes from light, wind, rain, and snow allowing for improved clarity and focus. It's for a pair and comes in a nice box.
improves clarity and focus
elimintates peripheral distractions
reduces lens glare
protects your eyes from the elements
fits most major brands - Nikon, Zeiss, Brunton, Vortex, Bushnell, Swarovski, Leica, Vixen (and more)
These come in regular and compact.