For newcomers in China Flat is important to know: there are canvas shoes, the little wide when worn, of course. Some recommend to take one size smaller. I personally am of the opinion, the smaller, the more they expand. So not exactly the best tip. Effective is this: buy normal size (I Gr 38 and have the Flats as bought.) And place after some time a slight insole into the shoe. This has the added advantage that the thin, hard plastic sole is then no longer be felt so. For that is the only point at Grump these Mary Janes. Would be great if there were they with a softer rubber sole.
Important: on my demand, I learned from the seller that he does not know whether the shoes again fulfill this year. So order quickly so that the appropriate size is still there!