I love the various sling backs made by Crocs.  All for a great price the styles are super cute, make your feet look smaller, are very comfortable and last for years (even with daily wear).  The strap and foot bed are both comfortable.  I'm normally a size 9 wide or 9.5 medium.  In this style I buy a 9 medium because the slotted toe design stretches a little for a perfect fit.  I would absolutely recommend these to all of my friends.