Vionic Copal Daniela Toe Post Sandals WhiteClinically shown to provide temporary heel pain relief comparable to an orthotic insert.* *Based on a peer reviewed clinical study partially funded by Vionic on patients experiencing moderate, non traumatic heel pain. 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