Sparco's Formula racing boots have been designed to offer optimal rider comfort with an excellent fit and feel. The upper is constructed from a high-quality perforated calfskin that provides maximum breathability while being resistant to water ingress. Breathable and waterproof calf leather upper Quick lace system for a quick and secure fit Elasticated rear section allows for maximum ankle articulation Shock-absorbing insole helps reduce fatigue Sparco Formula racing boots feature a Quick-lock laces and a full velcro ankle closure for a comfortable and secure fit. The rear of the boot is fully elasticated, allowing for maximum ankle movement without restriction. A cushioning insole coupled with an ultra-thin rubber sole provide increased pedaling feel and modulation with excellent levels of grip. Approved by the FIA 8856-2018 and SFI3.3/19