1Storm Adult Motocross Helmet Off Road MX BMX ATV Dirt Bike Mechanic HGXP14B + Motorcycle Bluetooth Headset: Carbon Fiber Black

Helmet Size Chart XS (53-54 CM,20.9/21.3 Inch); S (55-56 CM,21.7/22.0 Inch); M (57-58 CM,22.4/22.8 Inch); L (59-60 CM,23.2/23.6 Inch); XL (61-62 CM,24.0/24.4 Inch); XXL (63-64 CM,24.8/25.1 Inch);

Ultra light weight durable aerodynamic thermoplastic alloy shell; Helmet comes with motorcycle Bluetooth headset as bundle (installation required); Beautiful glossy UV protective finish; Removable and washable padding; Motorcycle Bluetooth Headset supports up to 3 riders intercom, 800 meter communication, 10 hr phone talk time, 7 hr intercom talk and 300 hr standby time; Compatible with most mobile phone, Ipad, GPS audio via Bluetooth 3.0 technology; Easy one touch phone call, music playing, FM radio control; Heavily cushioned and comfortable interior; DOT Approved;