Walk all over hard work with this heavy-duty, easy-on/easy-off pull-on boot with steel safety toe protection built for harsh work environments. The Red Wing Leather upper and single-density, direct-molded urethane sole deliver excellent durability, traction resistance. The leather extends high up the calf for added protection and support. Materials.Starting with hides from U.S.-raised cattle with minimal surface imperfections, we control every step of the process, using time-honored techniques to craft leather with natural beauty and unmatched durability.Single density urethane sole designed to provide durability and comfort. It delivers performance factors of abrasion resistance, cut resistance, traction, and oil resistance.