This comfortable binocular magnifier is perfect for bringing detailed work into focus. It fits comfortably on the head, and can be easily raised out of the way when magnification is not required. It features glass lenses, that are ground and polished to precise optical standards. The body is made of tough ABS high impact material that is grease, chemical, and flame resistant. The OptiVisor features dial-adjustable headband, adjustable pivot assembly, and one lens plate. Auxiliary lens available for added magnification (sold separately).