It's kind of difficult to say without trying them on, but when I tried them on, the 8 was a bit too small, but the 9 was falling off. I'm normally a size 8, so 9 was out of the question for me. If you're between size (e.g. 8.5), I would opt for the larger size. If you're an even size, I would go with your normal size (e.g. 38 for a size

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