These boots are WAY too big compared to normal USA sizes.  I ordered a 9 originally, which drowned my foot.  It felt like a USA 10.5 size.  After thinking I could wear them with extra socks, and layers of padding, I realized that this was not the answer as my foot was sliding everywhere inside the boot, so I swapped them for an 8 ... I received the size 8's and they are also way too big ...  I am normally a USA 9.  I will keep the size 8 and buy an insole, in addition to big socks as I had to pay for the return shipping etc.  The boots are fun, well made, and a great height and the calf diameter is ample but please buy a size (or two) smaller than you usually take if you want to wear these booties anywhere for long!