We designed the lens to maximize your peripheral vision giving you great vision while eliminating eye strain and eye fatigue, so you can wear it all day. Features: * Each lens is treated with an anti-fog coating at the factory, so it will NOT fog up! * No. 10 welding lens for EFP masks (Elementary and Gen X only) * Anti-scratch and UV coating * ANSI Z87.1 approved * CE approved * ASTM approved * Packaged in poly bag inside Save Phace lens box with lens guide and Logo Cleaning Cloth What"s In The Box: * Save Phace 53010165 Replacement Lens for EFP Mask - Number 10