These flat knee-high boots feature a stretchy back and inside zip for comfort. Perfect to wear with tights and dresses or denim - these amazing value boots are going to be your go-to pair for the colder months. Created with inspiration from 3D technology, giving the best and comfiest fit possible. The legs have been sculpted to fit the curve of a true leg shape, with a better fitting.Standard D Fit.STANDARD Calf Width.Heel: 1⅜in/34mm.Upper: Other materials. Linings and sock: Textile/Other materials. Sole: Other materials.Sizes: 4-8.