Alpinestars Supertech R Boot Size:40 Featuring 5TECH hybrid construction with

Featuring 5TECH hybrid construction with zonal stretch

D3O® ankle inserts reduce transmitted impact forces while the oil & slip-resistant rubber outsole ensures you stick every trick

It easily fits over any riding jacket in case you find yourself caught in a downpour

The premium leather uppers are married to the slip-resistant sole for rugged style with a comfortable fit

Alpinestars Supertech R Boot Size:40 Featuring 5TECH hybrid construction withAlmost every component of the Supertech R Boot, Alpinestars definitive racing boot as worn by a roster of champions past and present, has undergone a rigorous program of upgrades to sharpen its performance features even further. Featuring innovations derived using feedback from Alpinestars involvement in top flight racing, key elements include a newly redesigned front flex area, a redesigned rear bellow, a redesigned top gaitor, a new shifter and shin