The large interior volume of the Knowledge Turbo Fan OTG accommodates a wide range of eyeglass sizes while also fueling the fog-fighting performance of our patented Turbo Fan technology. Combined with our proprietary 5X™ anti-fog inner lens, the Knowledge provides incredible anti-fog performance for eyeglass wearers.
Two-speed micro-electronic turbo exhaust fan
Cylindrical carbonic-x lens
5X anti-fog inner lens
TLT lens technology for crystal clear vision
Patented Porex filter prevents optical distortion during changes in elevation