The soles of these shoes are amazing and so comfortable...HOWEVER...the backs cut into my heels so badly to the point of bleeding. I have only worn them 3 times and am ready to retire them to the back of my closet. I have to wait about a week in between each wear to give time for my heel to heal. Even with band aids the backs of the shoes just push the bandaids off. I love crocs but this design is a fail for sure.