MCR Safety Crews Safety Reading Glass, Bi-Focal Single Lens, series: BearKat® Magnifier RX™ Option, +2.5 Diopter, Universal, Duramass® Hard Coat/Scratch-Resistant Lens Coating, Clear Lens, Frameless/Wraparound, Clear Frame, Polycarbonate Frame, Polycarbonate Lens, 99.9 % UV Protection, Hybrid/Non-Slip Temple, Specifications Met: ANSI Z87+, CAN/CSA Z94.3, IsO 12312-1. MCR Safety BKH25 BearKat® Magnifier RX™ Option Bi-Focal Single Clear Lens Safety Reading Glass, +2.5 Diopter, Polycarbonate Frame