Certified goggles with round lenses of 50 mm diameter, 2.9 mm thick and optical class 1. Resistance to impacts of metal, wood or plastic particles is level S - up to 45 m / s. They are very comfortable, with additional side fixers that allow for perfect positioning on the face without the possibility of falling off. On fixators there is indirect ventilation and also serve as protection from side impacts. Glasses are made of quality plastic material of good finishing, without sharp edges that would irritate the face. The two parts of the frame are screwed in with a screw, which is easily discarded to replace the lens, which can be ordered separately. The handles can be adjusted lengthwise.