Zara black espadrilles size 40 or 9

Zara Basic black leather or faux leather (I'm honestly not sure and there are no markings, it could be faux but it's a very supple good quality faux if it is) flat espadrilles. Size 40, which according to Zara's size chart, is equivalent to size 9. Only worn 3 or 4 times for a few hours