Safety goggles ref. 539 clear designed to offer effective protection against the risk of impact from high-speed and low-energy particles, against droplets or splashes of liquids, coarse dust particles, gas and fine dust particles. the frame is manufactured by pvc injection and features a groove around its entire inner perimeter to accommodate the lens and the necessary lugs for its fixation. anti-fog and anti-scratch treatment. compatible with prescription glasses. panoramic shaped lenses (in one piece), flat, clear, and with a nominal thickness of 1.15 mm. standard: en iso 16321-1:2022