I looked carefully and long at the color choices and descriptions, and the Taupe is what I ordered because the description didn't say synthetic. However, they ARE synthetic.  This was disappointing because I paid the higher price for them thinking I was getting leather.  Also, the color does not look quite like the picture.  The Taupe I ordered looks more like the picture for Tan, and although I understand that different devices make colors look different, I still believe the color was different enough to throw me off, even if the real color is nice by itself.  Also, the insole had a little wrinkled/wavy bit on one shoe.  Nothing serious, but caught my attention.
FIT: The fit is pretty true to size, leaning just slightly  toward the large side.
POSITIVES:  The fabric is soft, not hard on the skin at all, right out of he box.  There appears to be a bit of padding around the ball of the foot, which is nice.  The heels are high, but the platform makes them feel  comfy and fairly stable. They look great on, both classy and/or sexy depending on the clothes you wear them with.  The packaging was very nice, with individual bags for each shoe being a nice touch.
OTHER:  the soles are flocked, which is nice to the touch, but on slippery floors they are very slippery.  You will need to get those slip grips fo the bottoms to get some traction.

I haven't decided what to do with these yet, but since they are soft and comfortable, I will probably just buy some extra padding for my smaller foot and keep them.  I just feel like others should know what I didn't before ordering.