You deserve to be comfortable during your long workday, which is why Caterpillar created new Ease – Engineered Comfort. A foam midsole, Ease is a propriety EVA giving you the best in comfort and durability. And if that wasn't enough Caterpillar also loaded this boot with new Nano Technology. Say goodbye to a bulbous toe, the new Ally 6'' WP work boot also gives you a slimming look with the ultimate in protection. Step into the Ally 6'' WP and experience the Power of Comfort. This boots features: full grain leather upper, nylon mesh lining, EVA sock liner, EASE EVA midsole and T1220 outsole. Material: Leather.