Our economy style Linear Polarized lenses are available in a superior quality, theater style BLACK plastic frame. These single use plastic linear polarized glasses feature superior quality 10-ml linear polarizer film and are packed individually in a sealed protective bag. Polarized glasses contain light gray filters for viewing theatrical presentations, multi-media displays, concerts, slide shows, and ride simulators. These stylish glasses may be re-used if they are washed and disinfected by hand.