Tempered steel shank. Double row welt stitch. Cushion Flex insole. Rolled shank area. 10 Inches in height. Shaft height and circumference may vary by size. 14-inch calf circumference. Distressed full-grain leather foot and collar with man-made shaft. Rocky Brands, Inc./Durango will donate $2.00 for each pair sold to the Stefanie Spielman Patient Assistance Fund up to $35,000..