With Ariat's Western ATSŪ Technology, the AriatŪ Men's Heritage Lacer boots are perfect for most avid riders who are looking for a lace up boot with comfort, quality and durability. Ariat?s ATSŪ Technology is the perfect choice for most avid riders. Whether in the saddle or on the ground, products featuring Ariat's ATSŪ Technology will dramatically reduce fatigue and stress in the feet, lower legs, and back. An exclusive gel-cushion insole conforms to your foot, while a composite fiber forked shank provides three times the stability of a steel shank. Additionally, Ariat's patented Duratread outsole is long wearing and provides superior traction.