So on flats I am a 5.5 but struggle to find shoes in style that don’t pinch in the toe box. These are PERFECT. They do not pinch in the toe box at all and at first they rubbed a little on the back but after a day of wearing they are perfect now. Truly these are great quality with a thick bottom, they look designer (no joke my boss thought they were), and they are incredibly comfy. Go true to size in my opinion.