Very cute boot. I am a regular size 7 but ordered the size 6 instead. The fit was good with a little extra room. Definitely size down by 1. I am only 5'1&#34; so I found it more attractive to wear it without the buckle and strap at the ankle, which can easily be removed.  It had a fair amount of room around the leg area. It falls just below the calf and was not constricting for my average size leg. I would recommend adding insoles for a bit more support. Heel squeaks a bit but maybe not as noticeable when walking outside. UPDATE: The best rain boots I've ever owned.  Super comfortable. No need to add insoles.  lightweight.  I'll order a few more colors.