Proto BlackProto is made up of experiments and every single pair is unique! We cut the leather from the first prototypes of our designs and sample shoes. Elements such as seams, laces, zips and elastics appear. Many leather flaws are part of the look of this re use. This model runs a bit bigger than normal. If you are between two sizes, we recommend the smaller size. If necessary, the removable cork footbed can be exchanged against a thinner version for wider