Classic comfort. Wide-calf, knee high boots for women with a sleek, understated silhouette that offers endless versatility. Leather/synthetic leather upper Partially recycled linings with soft + eco-conscious comfort Side zipper Square toe 15.75 inch shaft height, 15.7 inch circumference Note: Measurements based on size 6 boot. For each half size up from a 6, shaft height increases by .12 inch, circumference by .20 inch 1.75 inch heel Model Height 5'5 and wears a size 6 Measurements taken from base of the heel up 34cm Right calf measures 32.2cm Left calf measures 32.0cm