Comfortable safety glasses that protect your eyes and look stylish. They have adjustable ratchet arms that allow the glasses to be adjusted to fit the wearer. Recommended primarily for use with other personal protective equipment for grinding, cutting, hard and soft soldering, metalworking, operating furnaces, and when using open flames. However, additional personal protective equipment may be required. Unlike green-tinted infrared filter lenses, gray infrared filter lenses provide the wearer with better color recognition. Polycarbonate lenses absorb 99.9% of UVA and UVB rays.