Lucksender Womens Round Toe Platform Lace Up High Chunky Heels Knee High Knight Boots PU All of our Shoes are marked as China Size. Please measure your foot from toe to heel. We have updated the size chart, please refer to our new size chart. Rubber sole Shaft measures approximately 13.77"from arch,Boot opening measures approximately 13.38"around Heel Hight approximately 3.74",Platform measures approximately 1.38" Upper Materials:PU;Lining Material:Artificial short plush