The Swarovski Optik Objective Flip-Down Lens Cover is tailor-made to fit the EL SwaroVision binoculars featuring a 42 mm objective lens. Crafted to Swarovski's exacting standards, this lens cover ensures precise fit and optimal protection for your binoculars' objective lens. Please note that this product includes a single objective cap; EL SwaroVision binoculars are equipped with a pair of these caps to safeguard both objective lenses. Keep your binoculars protected and ready for action with this essential accessory from Swarovski Optik.