Provides integral strength and excellent penetration protection. This lightweight shell is chemical and UV resistant with inherent heat and flame resistance. Expected service life of 15+ years with proper care and maintenance. Open/close vent for maximum helmet ventilation and user comfort. Watertight seal when closed. Size 52–65cm (downsizing adjustment kits and XL sizes available). Simple operation with a single gloved hand. Comes with comfortable front and rear sweat padding in your choice of leather, merino, or vinyl and is easily removable and replaceable for decontamination. Single handed adjustment at multiple locations for maximum comfort and stability. Chin cup or chin loop optional (standard dependent). Can be easily secured, released, and adjusted with a gloved hand. Fully modular for easy decontamination and replacement without special tools. Available in Clear or Smoke Tint. Choose from Manual operation with pull tabs or the One Touch Eye Protector™.