The Slide features an open-back and no ankle straps, making it the best slip-on style for your favorite sunny-day activities. This wide-strapped sandal will quickly become your favorite for casual Fridays, beach vacays and everything in-between. Material: Synthetic upper/synthetic lining and sole with synthetic heel This set includes everything you need to convert from heel to flat: The Slide flats Heel Kit Flat Caps Stelo arch supports *We recommend sizing 1/2 size up in this style*