I used the sizing chart which said if you are a half size, to go down in size.  They were too small for me.  They were also too tight, so tight, I couldn't wear a pair of socks and try them on, I could barely get them on without socks. They fit like clogs with the top coming far up your foot.  I do tend to look looser fitting, wider shoes.  So I need Crocs relaxed fit. But I also don't find 'clogs' confortable.