If the lens on your EyeSonic combined eye and ear protection product becomes scratched, then by purchasing this replacement lens, you can easily replace it. There are replacement instructions on the box. Get back to work and see clearly again. Features: Replacement lens to ensure clear vision and a longer product life Impact, Corrosion & Penetration resistant, tested to ANSI, UK and EU Standards Lateral Coverage & ignition proof - tested to ANSI, UK & EU standards Noxious free – Innocuousness tested to ANSI, UK, and EU standards High optical quality & luminous transmittance and haze free to ensure clear vision - UV Resistant Tested for High Mass impact and stable at elevated temperatures Specifications: Dimensions: H:5.0 x W:15.5 x D:7.0 cm Colour: Clear Guarantee:0 years Material: Plastic Model Number: ES1005