"I bought these in the cuoio color, size 40. I wear an 8.5 or 9US. In Ash shoes, I wear a 38.5 or 39. Normally a 38.5. I read several reviews that said to size up, so instead of getting a 39, I decided to order them in a 40. I'm so glad I listened to all of those reviews. The 40 fits me pefectly. If I would have went with a 39, then my toes would have been hanging off the front of the shoes. By the way, if you want to read more reviews that what is posted on FP's site, then search for Ash Vivian wedges/sandals. This is another instance where FP changed the name of the shoe style from Vivian to Alisa. The color is gorgeous and I find them easy to walk in. There isn't any cushioning, so I'll probably end up adding Foot Petals to them. That way I can wear them for an extended length of time. The ankle straps are a bit loose. I wear them on the tightest notch and there is still some room. Not enough room to make them feel like I'm walking out of them though. Overall, I love these shoes! I highly recommend them."