The concept for this shoe is really good.  The problem is the end product.  Sizing is very difficult and confusing.  I wear a size 9.5 D shoe.  Size 9.5 D in this shoe is too small.  I sent that back and got a 11 D.  After wearing the 11 D around the house a few days, I notice it was too narrow.  Also, I noticed that the grey shoe got stained and I did not feel right in sending it back.  I ordered an 11 2E in black and will donate the 11 D grey to good will.

The 11 2E fit OK, but this shoe, after wearing for a short while becomes uncomfortable and very hot on your foot.  I sent it back.

I tried really hard to make this product work for me.  In the end, the concept is good, but the product lacks something.