Sight Your LineThe Blok utilizes a frame designed around our Expansion View Technology (EXV) delivering an exceptional field of view with clear, sharp optics and a tear-off compatible polycarbonate lens. The fit is comfortable and stable too, so you can focus on your lines without distraction.Key Features:Expansion View Technology (EXV),Double layer face foam with micro fleece facing,Anti-fog coating,Helmet-compatible design,Double silicone-backed strap.Lens:True Sight polycarbonate,Tear-off compatible,Spare clear lens included,10-pack of tear-offs included.Frame Fit:Size Large Adult EXV.