Everyone but one fellow said that the sizing ran big.  So I got my regular size, I'm a 8M.  Shoes came in well packed and but far too small if I wore any socks and there is not any lining.  So I returned the item and got hit with a 20 dollar return -- 5 for the UPS shipping and another 15.00 for some promotion that I didn't know of.  Amazon owns Endless and Zappos and as these shoes are notoriously unpredictable in sizing so I would recommend one those places instead of Amazon.

To be honest totally honest though,  Crocs does the same thing for half the price, with a removable lining,  and the sizing is always true with Crocs.  I really wouldn't recommend this brand.