These are my third pair of Gizeh Birkenstocks, and I love the greenish-goldish color I selected here.  I don't require break-in time for Birkenstocks, but those who have never worn the brand before may need some getting-used-to time.  Birkenstocks are very comfortable, and I love that these sandals can be worn with super casual outfits as well as with summer dresses.