O'Neal 3 Series Flat Helmet The 3 Series Helmet by O'Neal consists of a light poly-injected shell, featuring complete airflow, enhancing aerodynamics and cooling. Features: Shell is constructed with durable Polycarbonate Shell weight (size large): 1500grams (50) Ultra-plush removable/washable padded liner keeps you cool and dry by wicking away sweat Adjustable visor design Intake and exhaust vents for ventilation and cooling Durable multi-colored clear coated graphics Replacement parts available Meets Dot, ECE 22-05 and As/Nzs safety standards