Because I have had issues with online shoe sizing in the past, I decided to order a half size bigger than my normal size.  Luckily I did so....this shoe runs very small! I was initially going to send them back and go a full one size bigger than my normal size, because the shoe was very tight with socks on, however walking around with the shoe on for a couple of days w/o socks loosened them. eventually I was able to start wearing them with socks, now Im glad I didn't go a whole size bigger, but still a half size bigger than my norm was necessary! once there broken in, it's a great shoe, very warm, comfortable and stylish. I am very pleased with using them to either run everyday errands or traveling!