Alpinestars have put their years of racing experience all into these no-compromise Supertech R racing boots. No wonder these are the most popular boots in MotoGP and WSBK racing! The Supertech R offers maximum protection and comfort while you're ripping up the track. Every part of the Supertech R is made for racing. You will find replaceable clip-on heel, toe and even chin sliders for maximum safety and less friction in the event of a crash. The newly designed lightweight rubber compound sole offers excellent grip and feel and allows for natural flex as the rider changes position and pressure on the foot peg. The full length of the inner side of the boot is made of suede microfiber to make sure you have the best possible feel with the bike. On the front of the boot you will find vented sections to promote airflow into the boot. But the real eye catcher is on the inside of the boot. The Supertech R comes with an inner ankle brace system for maximum protection of your feet. This brace gives greater impact protection of the ankle and progressively absorbs flex and rotation stress, reducing pressure and hyperextension injurty to the lower leg joints. The Supertech R truely is the ultimate racing boot. Also available in a VENTED version with perforated leather for maximum airflow.