I can wear size 8 or 8-½ depending on the style and this one I originally bought an 8 but had to exchange it for an 8-½ due to the way the toe is curved and also because it rubbed my heel in back. I needed some extra room in front and back with this bootie. It has a comfortable felt-like lining throughout but it's pretty flat on the bottom — no arch support that I can see. I wouldn't go for a marathon walk in it but it's a really cute, comfortable casual bootie to wear around town and on casual outings. Looks cute with leggings or skinny jeans.