Base Lens: PRIZM MTB Trail Low Light. From Enduro to Downhill, with the Airbrake MTB goggles, you bid farewell to fog, heat buildup, and dirt, leaving your competition far behind. The exclusive Factory Lite Vent mesh structure ensures increased airflow and better ventilation at lower speeds while preventing the intrusion of mud, dirt, and stones into the goggles. The PRIZMT lenses are a revolutionary advancement in lens optics, built on decades of color science research. Prizm T lenses offer unprecedented control over light transmission, allowing colors to be finely tuned to maximize contrast and enhance visibility.