Wide Calf Circumference (IN) 15.8 - Extra Wide Calf Circumference (IN) 16.9 Calf circumference increases by 1.18 (IN) from standard to wide and wide to extra-wide Measurements based on size 6, standard calf; for each half size larger, calf circumference increases by 0.26 (IN) Available in Regular Calf - Search Vince Camuto Sangeti Heel Height (IN) 3 Zipper Closure Stacked Heel Square Toe.