We never take clear vision for granted, so you can judge for yourself. The Reason OTG from Smith can be worn over glasses and is compatible with the Optical Docking System (ODS). In other words, you can wear them over your prescription glasses or use our ODS prescription lens insert to ensure the best possible vision. Designed for larger face shapes, it offers a fit that is compatible with wearing a helmet without pressure, allowing you to wear your glasses naturally and comfortably all day long. The ventilated design regulates airflow for fog-free vision, even when wearing a helmet.