My new sandals in progress. These are a lot more work than I would have thought but I really think they are coming out great. I have made several pair in the past but have since done a lot more research into design, and construction. The sole is three layers as made since at least the classical Roman period. The parts consist of an insole (medium weight oak tan leather), mid-sole to allow tunneling the straps through, and an outer sole, in this case, leather. The straps are 48″ per foot plus the heel yoke.