Green leopard print flats. Size 11.

I purchased these green leopard print flats for myself and they sent me the wrong size. It stated that they were size 11, but I do not have proof because I don’t understand the writing on the bottom of the shoe. But the measurements of the box are clear 34 x 12 x 9 5 cm. Whatever that means but I know they sent me a size 11…I had to re-order. They are so cute on. I get tons of compliments