Stubbs and Wootton is my favourite flat shoe shop in NYC.  I always have to stop in when I'm in town. They have men's and women's collections with new pieces every season and offer custom made options. Above are photos of the NYC shop and the pairs I own. The tapestry ones are perfect for summer and so comfortable because they give to the shape of your foot. I made the mistake once of buying a velvet pair half a size too small, thinking they would give, they don't! Get the right size though and you will live in them.