I'm a size 7 in regular shoes, but wear a size 8 in running shoes to ensure proper room in the toe box.  I read the reviews that said this shoe runs large, but other reviews said it was true to size so I ordered an 8 and it was too big.  I would have returned them for a 7.5, but those weren't available with Amazon as the seller so I couldn't get the 25% off that I received on my initial order so I simply returned them.  I think the zip tie would take some getting used to.