The Scott Split/Enhancer OTG adult winter sports goggles are the ultimate goggles for wearing over the glasses (OTG). An integrated RAM air system dictates the airflow coming into the goggles through the top spoiler to ensure the lenses don't steam up and stay crystal clear all day long. Add the 3-layer face foam and the No FogTM lens treatment and those goggles will make riding with your glasses a breeze. Also, those alpine ski and snowboard goggles feature a VLT (Visible Light Transfer) rating of 28%, promoting a clear and accurate vision for sunny and cloudy weather.