Women's Vionic, Spark Caroll Flat. The classic ballet flat gets a comfort upgrade in this stylish low heel slip-on. The stretchy fabric top line and high back design offers an amazingly comfortable fit . Soft leather or printed leather uppers Slip on style for an easy on and off with soft elastic top line for an amazing fit Footbed: Removable microfiber wrapped EVA Biomechanically designed to hug your arches, Vio-Motion Technology helps support natural alignment from the ground up Manmade outsole