The Formula RB-8.1 was developed using feedback from Sparco’s professional drivers. This development program created some unique features for the new shoe. It has the next generation sole made in pure lightweight rubber which enhances the pedal feel and is also anti-static, fuel and oil resistant. The mid-boot design features a full ultra-soft calf skin leather upper with perforated vents. The upper has a Velcro strap closure and Speed Laces for better support and adjustability. Another unique feature of the Formula RB-8.1 is the Achilles stretch panel for improved mobility and comfort. It has a pre-formed anatomic insole. FIA 8856-2018 homologated.