FIA 8877-2022 approved for karting Unrivalled comfort and fit Shock absorbing heel padding The Alpinestars Supertech K Kart Boots are designed to deliver an exceptionally close and comfortable fit, with an ultra-lightweight knitted upper and memory foam heel padding that minimises impacts and vibrations from the chassis to reduce fatigue during long races. Advanced materials including a thermo-formed carbon heel cup, moulded midsole, and F1-derived ultra-thin rubber outsole combine to provide superb grip, cushioning, and stability for precise pedal control and lasting comfort. Key features, technologies and benefits include: Fully knitted upper construction: A lightweight and breathable blend of fibres forms a seamless, adaptive structure that moulds closely to the shape of your foot, providing a snug and secure fit that reduces fatigue and improves comfort inside the cockpit. Thermo-formed carbon heel cup: A precision-moulded carbon structure locks the heel securely in place, preventing unwanted movement during braking and acceleration, resulting in more accurate pedal control and better driver confidence. Moulded midsole: A contoured midsole provides soft cushioning