The Noosa Flip Flop from the Vionic Beach collection is constructed to provide support without compromising on style. This lightweight thong sandal contours to the foot and has an injected EVA footbed for extra comfort. Soft molded uppers Premium injected EVA footbed Infused Vionic contour Biomechanically correct heel elevation. 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, we recommend wearing your new Vionic footwear for just a few hours for the first few days to allow your feet to adjust to the new level of orthotic comfort and support. Within one to two weeks you should find the product completely comfortable and supportive.