Twisted Women's Layla Wide Width/Wide Calf Over The Knee Faux Leather Riding Boot with Buckle Straps Synthetic Imported Synthetic sole Shaft measures approximately 21 from arch Faux Leather Upper Over The Knee Boot Shaft Measures Approx. 21.5" from Arch 18" (approx) Opening Circumference Zip-Up Closure, Buckle Straps, and Lace-Up Back