Exclusive two-piece frame has long been popular for its combination of protection, fit and wide field of vision. Separate nosepiece molds to fit snugly. Flat, optically correct polycarbonate lens is treated with FogGardō Plus to prevent fogging in humid conditions. Patented ventilation system minimizes condensation by increasing airflow around the lens. Goggle headband buckle is located in back of frame; won't interfere with peripheral vision.