Advanced ClearZone FlowCoat lens treatments eliminate fog inside and prevent scratches outside; Tri-Tech Fit provides no-slip security and maximum comfort with no pressure points; DedBolt Lens Lock keeps lenses secure under impact and enables simple and fast lens exchange; Broad Rx Compatibility; Essopics deliver distortion-free optical precision throughout the entire field of view and greatly exceed ANSI standards; 2.4mm high-impact 100% UVA/UVB polycarbonate lenses; Single Clear Lens for use indoors or at night