ID Vent, Class 1 optics, B grade impact. N Class lens offer anti-mist and anti-scratch to keep the lenses scratch and fog free for longer. Conforms to EN166.1.B – Tested to resist impact of a 6mm steel ball fired at 270mph (430kph). Also offers 99.9% protection against UV radiation. EVA foam on the goggle housing provides a comfortable fitting to a wide range of facial profiles. Can be used with an RX insert for prescription eyewear. Low profile design means the EVO Goggle™ can be worn with an industrial safety helmet or bumpcap, and is fully compatible with our Evolution® range of safety helmets and our Hardcap™ A1+ baseball style bumpcaps.