Overall:
I have been looking for a pair of flats that I like for about 2 years. I don't like spending a lot of money on such plain shoes but I wear them pretty frequently for work so I decided to try them and they are amazingly comfortable. I wish so much they offered a non-leather variety because I would buy a bunch.

Size:
My right foot is 9 3/4 inches long and my left foot is 9 1/2 inches long, the widest part of my foot is 3.5 inches. I typically wear a 7.5 but can go up or down 1/2 depending on the style and/or manufacturer.

I bought a 7 and they are big. I inserted one of those silicone cushion things under the ball of my smaller foot to make them snug enough to keep on. I did go down a 1/2 size (thank goodness) but they are also a little wide, if you have narrower feet these may not work. Also, I'm pretty sure if I went down another half size they'd be too short.

If they don't hold up or something goes amiss, I will update this review, otherwise, assume they worked out well.