FIA 8856-2018 approved High quality calfskin upper Quick lace system The Formula race boots from Sparco have been designed to deliver optimum driver comfort with a superb fit and feel. The upper is constructed using a high quality perforated calfskin leather which provides maximum breath-ability while being resistant to water ingress. Breathable and water resistant calfskin leather upper Quick lace system for a fast and secure fit Elasticated rear section allows for maximum ankle articulation Shock absorbent insole helps reduce fatigue The Sparco Formula race boots feature a quick closure lace up system and full Velcro ankle strap closure for a comfortable and secure fit. The rear of the boot is fully elasticated allowing for maximum ankle movement without restriction. A shock absorbent insole twinned with an ultra-thin rubber sole provide increased pedal feel and modulation with excellent grip levels. FIA 8856-2018 and SFI3.3/5 approved