The BearKat® BK1 Magnifier's well thought-out construction combines the best in safety, comfort, and affordability! Your vision is unobstructed by the frameless one-piece wraparound lens, which by its secure fit allows you maximum safety. Comfort is enhanced by the flexible temples and the non-slip temple sleeves are notched on the end to accept a clip-on breakaway cord! These magnifiers are available in a variety of diopter strengths so there is an option that is just right for you! Meets or exceeds ANSI Z87+ and CSA Z94.3.