SLASHING ENGINEER BOOTSDESCRIPTION JULIUS 18 Pre Spring Collection. These engineer boots were made with horse leather. The fine texture of the hose leather has a tight appearance and as you wear it, it changes and produces three dimensional wrinkles. The zips are applied to the side gore, so you can adjust the silhouette by determining how high or low you want the zip to be. You can also take off the shoes easily as there is a zip at the back.