KleenGuard™ V60 Nemesis Rx Reader Safety Glasses, Black Frame, Clear Lens, +3.0 Diopter Strength, 6/Box (ANS28630) Box of 6Safety eyewear with integral diopters for vision assistance allows clearer vision. Larger wraparound lenses cover more area for increased safety. Precise placement of diopter insert creates distortion free visibility. Enhanced nose piece design features integrated ridges to channel sweat for a more comfortable experience. Lenses provides 99. 9% UV protection.