Attributes . Advanced Polycarbonate Composite Shell: Lightweight, superior fit and comfort using advanced CAD technology.. ACS Advanced Channeling Ventilation System: Full front to back airflow flushes heat and humidity up and out.. RapidFire Shield Replacement System: Simple and secure shield ratchet system provides ultra-quick, tool-less removal and installation for efficient operation.. SuperCool Interior: Moisture-wicking and antibacterial fabric. Crown and cheek pads are fully removable and washable. All CL-17 cheek pads are interchangeable throughout all helmet sizes.. DOT & SNELL approved. CL-17 Plus (3XL-5XL) . Values