Brinley Co Women's Estes Riding Boot Regular & Wide Calf Synthetic Imported Synthetic sole Shaft measures approximately 17" from arch Platform measures approximately .50" Boot opening measures approximately 15.5" around This style is also available in Wide Calf. Circumference: 14 inches, Wide Calf Circumference: 16 inches Heel height/type: 1.2-inch block Style: Riding Upper/outsole material: Faux leather, fabric/ TPR