I forgot my gym shoes one day and needed to pick up a pair, these were on sale so I tried them on.  The salesman said he sold a lot of them and there were no need for socks.  I believed him (stupid me) and proceeded to run  four miles in the shoes.  First off the shoes fit comfortably and I liked the way they allowed you to use your whole foot instead of being constricted in a running shoe.  After I finished the run and took the shoe off, I noticed that my large toe had a blister on the bottom from rubbing on the strap on the bottom of the shoe.  Not cool shoe salesman!  I came home and ordered some toe socks and we will try if again once they are delivered.