The Vionic with Orthaheel Technology Posey Ballet Flat is a classic flat that will be your new favorite. Buttery-soft kid suede and a perforated vamp make this pointed-toe flat anything but basic. Vionic brand's biomechanical technology is shown to be an effective treatment for heel pain. Vionic brand's biomechanical footbed supports you from the ground up. By building biomechanical technology into premium footwear, Vionic brings together the best of science and style. For the greatest comfort,