All the reviews and even the company said to order 1/2 a size down. I'm usually a 7-1/2 and if half sizes are available I USUALLY order an 8 or 38. I ordered a 7 as suggested- these fit but they're snug. I like my shoes fitted, but these are REALLY fitted. My big toe is definitely hitting the end. There goes my pedicure...

Returning Amazon items in SF is a huge pain and expensive so I'll just keep them. But word of caution these 7's fit more like a 6-1/2's.

(Also, from reviews and pics it looks like Croc has changed factories over the years and that's affected sizing- maybe I just got a bad batch?)