Coach Madeline Over the Knee Leather Boots with Back Zipper. Size 10B AN EXPOSED BACK ZIPPER ADDS MODERN EDGE TO THIS CLASSIC OVER-THE-KNEE BOOT THAT CAN BE WORN CUFFED OR NOT FOR ENSEMBLE-SPANNING STYLE. 19 1/2" boot shaft; 14" calf circumference. (size 5.5). Back zip closure. By COACH; imported. Leather upper, lining and sole. Women's Shoes. Item #724553