Vionic Sofia Women's Heeled Sandal. With an adjustable ankle strap and perfectly balanced block heel, the Sofia will lift you above the everyday for a look that is flawless. Features a caged strap design with buckle closure and medial gore for ease of fit. Vio-Motion Support is the evolution of the unmatched Vionic biomechanical technology. Vio-Motion facilitates unstoppable movement with trusted support. Stylish and comfortable footwear that incorporates a podiatrist designed biomechanical footbed.