These Racing boots are designed in microfibre and D-Stone™ fabric with high-grip TPU inserts.Comfort and safety are guaranteed by interchangeable magnesium sliders, protective nylon on the boot, heel and toe and the exclusive D-Axial TPU system that prevents excessive twisting of the foot.They're lightweight and high-performance, thanks to the internal retaining strap, quick-release fastening system, air-extraction system, magnesium inserts on the outside and heel, and flexible joints that increase comfort even when you're off the bike.