3X Extra Large-2017 NEW ! NOT-used (don't buy used helmets! ) . ATV/Motorcycle helmet.Polycarbonate Composite Shell. Large Eye Port for maximum visibility and superior goggle fit."ACS" Advanced Channeling Ventilation System. Full front to back airflow flushes heat and humidity up and out. Plush, Nylex® Interior: Comfortable, removable, and washable. DOT Approved.