HJC IS-33 II Open-Face Motorcycle Helmet (Black, X-Large) Advanced Polycarbonate Composite Shell is lightweight with superior fit and comfort using advanced CAD technology Aerodynamic shell with large eyeport for greater visibility Impact absorbing, single-density EPS liner One-touch integrated smoke-tinted inner sun shield deploys and retracts quickly and easily and is adjustable to three positions ACS Advanced Channeling Ventilation System provides flow-through ventilation