This sandal is actually prettier in person. I does run small, I ordered a size up and the length fits perfectly, but I had to tighten the strips to the last hole or they'd be too loose. They are synthetic and I bought them for the pool - 'water friendly'.  This is my second pair.  The other pair of haitis lasted many years and eventually the glue at the strap and footbed came apart. So great to have a birki footbed that can endure the water!