As other reviewers have mentioned, these are not a comfy as standard Crocs. Which is too bad because they are SO cute! I too get/got blisters on the backs of my heels, and the top of the shoe digs into my foot (I normally wear a 9-9.5 in non-Crocs, I usually get my Crocs in 10's... got these in 10's too). You can't walk around in them... I keep them under my desk to wear to meetings/after I get to work. Not very useful, but for the sale price it's not too bad a deal.