Alpinestars Supertech R10 Element Helmet - Black/Carbon Silver/Black Glossy Size - Head Circumference (CM):XXL (63-64) The multi-channel ventilation of the

The multi-channel ventilation of the  R2 makes for a cool head during every ride

to reduce potential rotational energy

ITW Airloc buckle

Ceramic Ball Bearing in the exhaust flap for smooth operation

Alpinestars Supertech R10 Element Helmet - Black/Carbon Silver/Black Glossy Size - Head Circumference (CM):XXL (63-64) The multi-channel ventilation of theAlpinestars Supertech R10 Element Helmet Black Carbon Silver Black Glossy The result of over 10 years of intensive study, development, and testing, the goal of the Supertech family of helmets is to create the most advanced, protective, and performance enhancing helmets possible for racers and riders worldwide. Following years of extensive research, development, and testing of the Supertech R10 road racing helmet by Alpinestars Helmet Product