Rubber soleMicrofiber Wrapped EVA Footbed. Durable Rubber Outsole.Received APMA (American Podiatric Medical Association) Seal of AcceptanceYOUR NEW FAVORITE SHOES: Prim Ava features a stitch-and-turn construction, where the upper?is stitched to the outsole and the biomechanical footbed is inset for?a sleek, low-profile silhouette. Crinkled metallic or black Italian?leathers, subtle quilting details, an elasticized topline and rubber?outsole make this ballet flat dainty yet daring.VIO MOTION SUPPORT is concealed within every Vionic shoe, supporting every step from the ground up so you can confidently move in unmatched comfort. Full biomechanical contact hugs your foot’s natural curves, providing essential support in all of our casual, dress and active shoes and slippers.Vionic supports you, so you can Walk. Move. Live.