Protect your investment with Zeiss'sFlip-Up & Fold Flat Lens Covers. Made from ultra-durable nylon the Flip-Up & Fold Flat Lens Covers protect your glass from rain snow dirt dust and mud. Once installed the Flip-Up & Fold Flat Lens Covers stay securely in place thanks to OEM fitment ensuring a strong and secure connection even when temperatures shift from extreme hot to extreme cold. The covers open silently and secure themselves in place in a flat position. The innovative design of the lens covers also includes a space to store an additional battery for scope illumination as well as a an "L" wrench for making adjustments.Features:OEM fitment and heavy-duty designPositive snap-to closingSecures in fold-flat positionRemains secure in extreme temperature shiftsRetains and secures your preferred diopter setting (Ocular)Ambidextrous operationQuieter upon openingLightweightManufactured from Nylon 11Two-year warranty against material and manufacturing defects