The upper is made of black leather with suede inserts. The interior material of "Rumney" is made of high-quality fabric. A well-padded removable insole provides the optimum comfort. A rubber outsole with a distinctive tread pattern for increased traction and perfect protection from moisture and is pulled up at the toe and heel cap, and thus offers optimum abrasion protection. The incorporated Caterpillar logo on the heel and the tongue assure the highest quality.