You’re probably familiar with Joey Wölffer—designer and driver of the boho mobile boutique, the Styleliner. The truck has been traveling up and down the East Coast for years, but Wölffer can’t be confined to just four wheels. That’s why she set up a pop-up shop in Sag Harbor, so the good news is you’ll know exactly where to find those suede fringe handbags now. We recommend grabbing a KMO small leather bracelet ($45) and a golden Buddha T-shirt ($88) before the pop-up ends in October.