I wear a size 8.5 to 9.0 men's shoe. I read the reviews on here and people said to round down,so I did. I ordered a size 8 croc. The shoe arrived on time,actually early. But! Rounding down one size was incorrect,these shoes are HUGE. My son wears a size 10 and they fit ok on him. I received them today and they are being returned today. Even with socks they are so big they will not stay on my foot. That includes using the strap,they are just to big. I have no idea who measures the size of these things but they really need to learn how to read and measure. They are way off. Now to top it off I am being charged to return these.