This motocross helmet is made from a CLC (Complex Laminate Construction) shell fiberglass composite that is stronger and lighter allowing use of softer, less dense liner materials inside for increased rider comfort. Shell shape designed for better aerodynamic stability at higher street speeds. Works in concert with the high flow peak and side cowl vents. Can be configured with shield and peak, peak only (for use with goggles) or shield only. Fully removable/replaceable and washable liner. Fourtop vents. Dual intake and dual exhaust ventilation -dual IC-3 top intake vents and double delta bridged exhaust vents designed to draw significant volumes of air from helmet interior. Efficient chinbar vent with interior and exterior controls; flows fresh air to the mouth area or across the shield interior to help prevent fogging. Large chin bar side exhaust vents draw out additional hot air. Meets or exceeds Snell and DOT standards. Note: The peak supplied with the XD4 is not suitable for high speed use. At such speeds air catching a side or main surface may cause difficulty in returning the head to a forward and/or level position.