I wear size 9 and I ordered 9 and this is perfect. Not super tight but it's tight enough. It could be good if it gets stretched half size up. It's so warm almost too hot. hahaha
I have ugg and it's same warm but since this emu is water-treated it's really good. I had to test it and ran it under the tap water and rubbed it a little bit. it got wet but it dried in 10 seconds and it looks perfect.