A back zipper is a slide fastener located at the rear of a garment or shoe. In footwear, a back zipper closure is mostly used in high top boots for women and is intended for esthetic purpose rather than functional.
About Wedge Sandals:
Wedge sandals are sandals that feature a triangular, wedge heels that runs uniformly underneath the foot. This heel design can add height, but is often considered to be easier to walk in than other heeled sandals. Wedge sandals may have any variety of upper design or styling or colors.