The most technically advanced work boot for any job. The Ariat Sierra� combines pull-on western style withat Advanced Torque Stability Workhorse� Technology to provide consistent support stability comfort and durability both in the saddle and on the ground. Features include oiled water-resistant leather uppers full Goodyear welt ATS carbon-fiber forked shank gel cushioned ATS footbed orthotic arch comfort fit ankle flexion notches and oil and acid-resistant Duratread outsole.