Through the ages shoe soles have mostly been made of leather. Its durability, flexibility, tool-friendly qualities, and extraordinary vapor permeability make leather-soled shoes especially comfortable. Leather is porous in structure which gives it the particular advantage of breathing along with the foot, thus keeping it dry.
THE PROBLEM
On wet surfaces leather soles lose their advantage because they tend
to absorb moisture, resulting in wet feet. So far, all attempts to solve
this problem have failed.