Alpinestars Supertech R10 LE Martinator R01 Helmet Size - Head Circumference (CM):M (57-58) Every detail is designed to

Every detail is designed to ensure ultimate performance

Every component on the SMX-6 v3 Boots has been carefully designed with rider performance in mind

Auto healing connection to avoid re-pairing when a connection is lost

Easy to install

a surprise on a racing helmet

Alpinestars Supertech R10 LE Martinator R01 Helmet Size - Head Circumference (CM):M (57-58) Every detail is designed toAlpinestars Supertech R10 LE Martinator R01 Helmet 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 Development Department, together