1Storm Motorcycle Modular Full Face Flip up Dual Visor Helmet + Spoiler + Motorcycle Bluetooth Headset: HB89 Glossy Yellow

S 53-54 CM 20.9/21.3 Inch
M 55-56 CM 21.7/22.0 Inch
L 57-58 CM 22.4/22.8 Inch
XL 59-60 CM 23.2/23.6 Inch

Helmet Size Tips

(1)Wrap a measuring tape around your head about a half-inch above eyebrows
(37)Take measurement two to three times to pick the largest one.

• DOT Approved; Size L (57-58 CM.22.4/22.8 Inch); Helmet comes with spoiler and motorcycle bluetooth headset as bundle (installation required);
• Advanced Modular/Flip up and Dual Lens Design (inner smoked lens/outer clear shield);
• 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;
• Aerodyname Spoiler mounting helps helmet steady and stylish looking;