Men's Asportuguesas, City Slip-On. The City model is our well-known slip-on style that will take you from the couch to the store in total comfort. Made from a non-woven fabric obtained through the felting of natural wool fibers, these slip-on shoes are uniquely comfortable and environmentally friendly. Environmentally friendly, recycled wool felt upper Easy to wear slip-on styling Cork cushioned footbed Textured natural cork and rubber outsole that's perfect for indoor/outdoor wear. Heel Height of 1.50 inches. Platform Height of 1.25 inches.