Clear Focus For Intricate Detailing Visor tilts up for normal viewing, or down for magnification. Constructed of a high-strength plastic, the visor can be worn over prescription or safety glasses. Its state-of-the-art design shields out unwanted glare, so modelers can focus on the project in hand! Features a precision optical grade acrylic prismatic lens, and three interchangeable lens plates (3x, 4x and 5x).