Fashion sandals are intended for wear because their design based on trends and aesthetics, rather than for a particular feature or purpose.
About Wedge:
Wedge shoes, also referred to as wedge heels or wedges, are shoes with a triangular shape heel in the form of a wedge, with the heel and sole forming a solid block. Wedge heel shoes generally raise the heel of wearer between 1" to 3" and considered to be more stable that other types of high heel shoes. Wedge shoes come in a variety of styles, including sandals, pumps, and boots.