The Olympic Optical 30.06 safety glasses with brown lens come with a 1.5 bifocal in the bottom of the lens. For easier reading, they have a magnification power of 1.5 on each side of the glasses. Each kit comes with the Bifocal Safety Glasses and Lens Clearning Storage bag. With an ergonomic and stylish frame, these glasses look as good as they function. The GS7 nylon frame is designed for comfort, and the 7 base polycarbonate lenses deliver the best style and protection for your face. They feature a soft rubber nose pad, and for maximum comfort, the pad has self-adjusting fingers. If youÕre looking for one of the toughest pairs of reading glasses that we carry, the Olympic Optical 30.06 reading glasses wonÕt disappoint you. TheyÕre designed for high-velocity industrial protection standards and exceed ANSI Z87. regulations.