Twisted Women's AMIRA Wide Width/Wide Calf Faux Leather Knee-High Western Flat Riding Boot with Multi Buckle Straps Faux Leather Imported Rubber sole Shaft measures approximately 4" from arch Platform measures approximately 1.25 Faux Leather Upper Zip-up Sides for Easy On/Off Tough Rubber Sole 18" (approx.) Opening Circumference Shaft Measures (approx.) 16.5" from Arch