The one pair of shoes (or two or three!) that will crisscross time zones with me this summer will seamlessly go with a caftan during the day to a dressy dress at night--with help from 's new shoe collection. Debuting today, Ref's sandals, espadrilles and flats are all super versatile, super sexy, and sustainably made, using materials like chrome-free leather and jute. Plus, they're affordable! I especially love the vintage-spirited thong-inspired , above, the backless ballet , and , below. I've already put one pair to work yesterday on the Lower East Side. See !