Orthaheel Vionic Technology Womens Rosario Sandal Black Size 9 Synthetic sole A woven floral applique adorns this Spanish toe post sandal. Podiatrist-designed- biomechanical orthotic footbed with deep heel cup helps support and realign the feet back to their natural position. Lightweight dual-density rubber and natural cork midsole with EVA heel patch for added comfort. Vionic-patterned EVA outsole provides traction on a variety of surfaces. Clinically shown to help relieve common causes of plantar fasciitis- heel pain and knee pain- related to over pronation and flat feet. Has the American Podiatry Association Seal of Acceptance.