Double lens protection with TMC technology to offer fog-free use. Protection against medium energy high speed particles at 120 m/s (270mph). Lens comply with the requirements of optical class 1 (highest). Dust, liquid splash, molton metal & HIGH temperature protection. Also offers 99.9% protection against UV radiation. NBR foam on the goggle housing provides a comfortable fitting. Low profile design means the Thermex 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. K & N Class lens offering Anti-scratch & Anti-mist protection.