I wear shoes in either size 6.5 or 7. In these boots I preferred the 7s as the 6.5 fit but felt a bit tight and although the sales clerk said they would stretch out a bit, I felt they would be uncomfortable until that happened. The 7s felt a bit bigger than I'm used to, but I just wear them with a slightly thicker sock and they are fine. They are very comfortable right out of the box!
Love my boots! I'm on my feet all day at work and my feet feel fine at the end of the school day. Versatile too....I've worn with jeans, jeggings, tights!