I'm a size 8.5 but since that option was not available when I purchased this shoe, I looked at reviews online to figure out if I should get an 8 or an 9. Many reviews said the shoe runs slightly big so I purchased a size 8. They fit perfectly length wise. I think I bought these like four months ago. I'm like the opposite of flat footed, I have a pretty high arch. The arch made these shoes notttt comfy like at the bottom part of the shoe laces near your toes. Also, prepare the back of your heels before you wear these with normal socks for a while. After a walk down the street, the back of my heels were Very raw/bloody and hurt SO bad. I started wearing three pairs of socks over each other before putting these on... works great. wearing puffy socks made the shoes stretch to the shape of my foot so now when I wear them, I only have to wear one semi-thick sock and I'm gooddd to go :) These shoes are very very nice quality like the soles really do feel like you're bouncing alittle bit every time you take a step. I stepped on broken glass by accident outside of seven eleven with these boots on and didn't effect them or me whatsoever. These shoes are completely awesome.