I ordered the KEEN Clearwater CNX's in size 10.5 at first because I have a wider foot and have been sized at 9.5-10 EE before and know to get a decent fit I usually need .5 size larger shoe to account for the width difference when wider shoe sizes are not an option. The fit on the 10.5 were fine if not a little too roomy, however I quickly discovered the flexible  ribbing on the side lead to my little toe escaping and jamming uncomfortably into the shoe when I tried them on for a few hours around the house. Def. not something I want happening out in a riverbed, beach, or street. Too big apparently!<br /><br />I sent them in for an exchange for the size 10, and trying them on, they are very tight on my feet. Like...feet bulging out the open ribbing tight. No little toe escape attempts yet but I'm not sure if I'll keep these since the shoes appear to be stretching to the max around my feet. It's a real shame too since I love the style and lightweight aspects of these shoes. I know I'll still be on the hunt for a similarly styled wider waterproof sandal for a few months to come.