Funtasma Women&#39;s Gogo-300X Knee-High Boot,Funtasma,GOGO-300X/W" /> 100% Synthetic Manmade sole Shaft measures approximately 16.5" from arch Heel measures approximately 2.75" Boot opening measures approximately 16.25" around Upper Material: Synthetic Synthetic sole Heel: 3" Lining Material: Synthetic