70 mm Low boots - Calf leather and spikes - Black An ankle boot with a slender design, the Out Line Spikes is innovative. With an asymmetric elastic insert and a heel tab, it is crafted in black ingrassato calf leather. This sleek, elegant, urban style features a 70 mm square heel and is enhanced with rows of Maison Christian Louboutin signature silver spikes. Product information: Material: Calf leather Color: BLACK