Wide Calf Circumference (IN) 16.8 Calf circumference increases by 1.18 (IN) from regular 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) Heel Height (IN) 3.6 Nylon Zipper Closure Block Heel Pointed Toe Available in Regular Calf and Extra Wide Calf- Search Vince Camuto Biancaa or Vince Camuto Biancaa Extra Wide Calf