Black leather knee-high boots with block heel A classic in our collection, the Est boots are shaped from black leather to a knee-high silhouette, featuring a squared toe and block heel, and benefiting from a functional side-zip fastening. Product type: Boots Material: Sustainable Leather Composition: Upper, Lining, Insole: 100% Cow Leather, Outsole: 100% Cuerolite, Hardware, Plastic Zipper Heel height: 7cm Color Family: Black Made in Spain. Designed in Barcelona