Stylish spectacle element design 65 base one piece lens offers optimal coverage removable replaceable elastic strapping fully adjustable spectacle frame for maximum comfort and security anti mist coating on lens as standard anti scratch coating on lens as standard conforms to en 1661f lightweight for user comfort under 60g exhale valve fitted for increased filter element longevity each product comes supplied with 3 filter elements 1 fitted 2 spares conforms to en1871999 fmp