Steve Madden Women's Xenonn Over-The-Knee Boot 100% Suede Synthetic sole Shaft measures approximately 22" from arch Heel measures approximately 4 1/2" Platform measures approximately 3/4" Boot opening measures approximately 16 1/2" around suede Manmade sole Shaft measures approximately 22" from arch Heel measures approximately 4 1/2" Platform measures approximately 3/4"