I wore these shoes twice, including today all day, while I was on my feet a lot and walked more than I'd anticipated, so now is ideal for a review.I have not been able to wear most flats, even previously comfortable ones, past few years due to bone spurs (per x-ray) that give me blisters on strange spots on the sides of my heels. But I discovered that I can wear knit flats without getting blisters and I needed black, so I am grateful for these.First impression is that I love the asymmetric design- adds a subtle, stylish flair. They also seemed a little big. My feet are between a 6.5 and 7; lately most shoes that fit me, especially from China, are 7s. These poemlady ballet flats seem to be what I used to consider a true 7; slightly big on me, but these days most 7's are not big on me, so whether or not they are true to size is relative to sizing of other shoes. I would say these are true to size or slightly large. My feet are on the narrower side, so they may fit more snugly on wider feet. Also keep in mind that they are not really US sized- the 7 is marked 37.5 whereas if they were made in Europe, I would normally fit a 37.These shoes come with thick, contoured insoles, which are very comfortable. These are removable and there is an extra pair of insoles which are flat and thinner. I believe these are for people who need more room inside the shoe and that can be achieved by swapping the insoles. For me, I filled up the extra room by putting the extra insoles underneath the contoured ones, wearing both sets at once. This worked out really well. So much cushioning! At first the shoes still felt like they were slipping on my heels, so I worried about friction blisters but that did not happen.They are lightweight, flexible and packable. I don't understand the point of them being foldable. Seems like they take up less room flat, and then they can be placed sole to sole, so there is no exposure of the soles to other items in your bag. If there is some reason to fold them up, they should have come with a pouch.Overall, I do like them a lot and anticipate wearing them often. Very happy that I was on my feet all day and they're not sore. I definitely recommend.