The Vionic Lacey Block Heel Slingback has it all - a stylish open heel with a backstrap that will take you from day to soiree. Vio-Motion Support is the evolution of the unmatched Vionic biomechanical technology. Vio-Motion facilitates unstoppable movement with trusted support. Full-contact support hugs your curves. Heel seat stabilizes and positions foot. Ball-of-foot cushioning for all-day comfort. Vionic's Elevated Support technology helps you walk and stand in comfort throughout the day - even in heels and wedges. Upper: Leather or Suede. ELEVATED SUPPORT: A podiatrist-designed footbed hugs your arches so you can walk and stand in comfort all day long even when wearing heels and wedges. Footbed: Man-made. Outsole: Durable Rubber. Est. Heel measurement: 3.0" Support your soles in our range of elevated styles. Vionic's versatile collection of heels and wedges offers advanced comfort features like a deep heel cup and enhanced forefoot contour, bringing innovation and style into one transformative solution.