Runs true, the height is good for people who need a little height because of foot/arch problems, however, because the straps are so thin it feels like the flop could easily come off. I know they're flip flops so not expected to be like Birkies or the strapped active Tevas the brand is known for, but it felt TOO floppy for regular walking - like lost shoe-tripping disaster waiting to happen. Plus bec of the heel, foot slides forward a bit, felt like it could "bite" in the long run.