Orthaheel Vionic Technology Womens Pearl Sandal Black Size 6 Synthetic Rubber sole Built-in, podiatrist-designed orthotic footbed helps support, stabilize and naturally realign your feet for better posture and balance Soft synthetic upper with thong styling allows for easy on / off Durable, textured rubber outsole provides traction to help keep you confident on your feet Deep heel cup and raised arch support help hold your foot in the proper position on the footbed