Pleaser Women's Electra-2042 Boot 100% Synthetic Synthetic sole Shaft measures approximately 16" from arch Heel measures approximately 4 1/2" Platform measures approximately 1" Boot opening measures approximately 15" around Synthetic Manmade sole Shaft measures approximately 16" from arch Heel measures approximately 4-1/2" Platform measures approximately 1" ; Boot opening measures approximately 15" around; 100 Percent Authentic