5" Chunky Heel, 3" Platform Mid-Calf Boot, Side Zip Approximate calf circumference: 9.9" Approximate shaft height: 6" 5" (127mm) Chunky Heel, 3" (76mm) Platform Lace-Up Mid-Calf Boot Featuring Heart Shield Buckle Strap w/ Embroidered Spider web and Round Studded Details, Metal Inner Side Zipper Approximate calf circumference: 9.9" Approximate shaft height: 6"