Sparco Superleggera KB-10 kart boots are made from high-tech breathable pressed fabric and innovative molded TPU. This means that the KB-10 boot is scuff resistant thanks to this amazing non-stitched material. The Superleggera KB-10 racing boot also features an elasticised panel at the rear just above the heel to improve fit and allow the ankle to move freely when driving. Light asymmetrical soles with integrated external reinforcement are also utilized for the area most affected by wear from using the pedals.