These booties are marked as size 11/42 but fit like a US womens size 12/44. I wear a US mens size 10.5 and they fit me, so they definitely are larger than a US womens size 11. The heel is about 6" high with just under a 1 1/2" platform. They are well made with a solid platform so the heel does not twist. These are not for beginners, and are like new.