This pair of Tom's bites into my heel so badly on both of them that I cannot wear them.  Sadly I cannot return them due to wearing them.  I had gotten a pair of Tom's through my work that had our company logo (through our company store).  I thought because those were comfortable that any Tom's of similar shape would be.  I was greatly mistaken.  I am out quite a bit of money for these and not happy about it.  I even ordered a size up to ensure they fit well.  It is due to the shape of the back of the shoe, not the size.