These are just a little on the large size, and fit a bit like Crocs would ... in other words, being a big larger doesn't change how they fit on your foot, and doesn't make them uncomfortable to walk in at all.  Actually, these shoes are AS comfortable as a pair of Crocs -- and I'd say even more, since you're not feeling goofy wearing them. Ha!  I get a ton of compliments on these everywhere I wear them, and they're fun to wear in all climates!