Jackson Safety Dual Readers Safety Glasses (20387), Clear Lenses with +1.5 Diopters, Black Frame, 6 Pairs 6 Pairs of Jackson Safety Dual Readers Safety Eyewear; Black Frames with Clear Lenses (ideal for indoor use for maximum light transmission) Features +1.5 integrated diopters ("cheaters") are on the top and bottom of the lenses, for vision assistance when looking up and down These safety readers have a 7 base curve, which helps provide for peripheral vision and protection and feature an hard coating to prevent lens damage Ergonomic frame and comfortable, self-adjusting rubber nose pad for comfort Meets ANSI Z87.1+ standards for high impact and polycarbonate lenses provide 99.9% UVA / UVB / UVC protection; TAA compliant