botas sparco k rapid 2025K RAPID The K Rapid shoe was developed using feedback from Sparco's professional drivers. This development program created some unique features for the new shoe. The K Rapid does not have a traditional tongue, it uses a durable stretch fabric called Jaquard that acts as an upper stretch panel. This unique upper gives ultimate comfort as the shoe can stretch and breathe. The same Jaquard material is on the backside of the shoe where it allows the