I bought these so I would have something a little dressier than flip flops.  I have a bad back and can't wear heels anymore.  I like that there is a tiny heel on these, but not enough that it hurts my back.  These were extremely comfortable from the first time I put them on.  I didn't need to break them in at all.  Now that I've worn them for a little while, they are literally one of the most comfortable pair of shoes I've ever owned.  I would definitely recommend these to anyone.  I plan to order more of these in the future.