So sleek and uncomplicated, this supportive, goes-with-everything mule is a slip-on you have to feel to believe -- and a really fab alternative to heels. From Vionic®. Style: Willa Mule Slip-on style Contoured, injected footbed with Vio Motion technology Durable rubber outsole with textured tread offers good traction on a variety of surfaces Helps to relieve common causes of heel pain and knee pain, related to over-pronation and flat feet An ideal complementary option for orthotic or arch support wearers, particularly at home on hard flat floors APMA Seal of Acceptance Bottom construction: South Approximate measurements: Sole 0.16"H; Heel 0.61"H Fit: true to size; recommended 20 to 30 minutes of break-in time for the first few days of wear Natural: textile upper; TPR outsole Cream Leather/Black Leather/Red Suede: leather upper; TPR outsole Imported Vionic Leather or Textile Mules - Willa Mule