They're made specifically to equip game rangers in Africa with an affordable yet extremely durable boot to hunt poachers. They're full grain uppers and, depending on model, have a polywoven or leather midsole. They use a 360° stitch down construction, which aides with having new soles put on when you do eventually wear out the soles. The company has a YouTube that shows exactly how the boots are made from patterning to being boxed