VIONIC Alexa ballet flat :: pale pink :: 9.5 :: new- never worn A simply beautiful unlined ballet flat in soft Lizard embossed leather with an elastic topline for additional comfort. Alexa Flats Vio-Motion Technology is designed to hug your arches and support your feet in comfort. Vionic flats built-in orthotic is shown to be effective in helping to treat heel pain (plantar fasciitis).