I am a dancer and hope to clarify some fitting questions about these lovely shoes. They are built like a literal ballet
slipper, meant to wear like a little leather sock, but in this case the sole is rubber instead of suede, and the whole shoe is made to withstand more than a few rehearsals. The stretching and toe bumps are the result of the shoe's ability to conform precisely to your foot and the way you move, very like a dancer's shoe. The break-in time happens quickly in these shoes because a
dance shoe needs to be usable right away, and the less it keeps its shape and takes on yours, the better. If you are narrow-footed, get your true size. I have long, narrow
slippers that run between a 9½ and 10½ (with a half-size difference from one foot to the other), and am frankly astounded by the perfect fit of size 10 after only a day or so of wear. I have three pairs and wear them everywhere, including onstage. It is hard to choose, but my white naplaks are my favorites and I like patent leather that feels like it has been broken-in better than your favorite
sneakers. They can take a little more wet weather, too. I live in my Sloops and now suffer less from awful foot cramps because my foot is not fighting a shoe when I walk. These are made to become uniquely yours as you wear them. I would not trade mine for anything!