Bell Mag-9 Open Face Motorcycle Helmet (Solid Gloss Black, Large) Designed to easily accommodate the Bell-specific Senna SMH10 Bluetooth stereo headset and intercom the ultra-comfortable and versatile Mag-9 redefines the open face helmet category Lightweight Polycarbonate/ABS Shell Construction. 3 EPS sizes for a personalized fit. Velocity Flow Ventilation system with Flow Adjust Integrated communication port accommodates Senna and Card Bluetooth stereo headset and intercom systems. Convenient speaker pockets make communication device set up easy Multiple configuration options: with or without shield and with or without visor. Fast and easy tool-free shield changes