Soft System® comfort package provides all-day support, flex, and cushioning. Traction sole provides you with extra stability. 15 1/8 inch boot height, 14 1/2 inch calf circumference. Note: Measurements based on size 6 boot. For each half size larger, shaft height increases by . 12 in, circumference by . 20 in. Just Right Height 2 3/4 inch heel.