Protect your investment with Zeiss's Flip-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 design Positive snap-to closing Secures in fold-flat position Remains secure in extreme temperature shifts Retains and secures your preferred diopter setting (Ocular) Ambidextrous operation Quieter upon opening Lightweight Manufactured from Nylon 11 Two-year warranty against material and manufacturing defects