HJC IS-Max BT Multi Modular Snowmobile Helmet with Electric Shield - MC-5 Black, X-Large Advanced Injection Molded Lightweight Polycarbonate Shell, Silver Cool removable and washable interior Bluetooth ready with an exterior module recess and interior speaker cavities Three Stage Multiple Postions with Locking Mechanism, Single-Button One Handed Chin Bar/Face Shield Release ACS Advanced channeling ventilation system Three Stage Multiple Postions with Locking Mechanism, Single-Button One Handed Chin Bar/Face Shield Release