These are very cute but I had to return them.  I usually wear a 8.5 or 9 and as per the reviews they run a little large so I got an 8.5 but I should have gotten more like an 8.  The 'nude' color ones are the only ones that are not made of a synthetic material that I know of, they are leather whereas the others are PVC or a pleather.  Also, I love the color of the nude on the website but when I got them, they looked like a dark taupe, nothing like pictured.  It's too bad because they are great for the price.  I found some faux suede ones at Urban Outfitters and these are much better since real leather.