Ariat Women's Brossard Zip English Paddock Boot 100% Leather Rubber sole Shaft measures approximately 5 1/2" from arch Heel measures approximately 1 1/2" Boot opening measures approximately 8 1/2" around Heel Height: 1 1/2" Shaft Height: 5 1/2" Circumference: 8 1/2" Fit: True to Size Outsole: Rubber