Brinley Co. Womens Knee-High Gore Stretch Riding Boot PU Leather Imported Synthetic sole Shaft measures approximately 19.5 from arch Platform measures approximately 1.00" Tall boots with stretchy back panel Upper/outsole material: Polyurethane upper, elastic/ TPR outsole Heel height/type: 1.1-inch block Shaft height: 19.5 inches Circumference: 15 inches