Product Features This form of leather is more resistant to water and other liquid damage and requires less maintenance over time. Lighter weight with cool comfort in warmer temperatures, our unlined leather boots will mold perfectly to your foot. Oil-and-slip resistant outsoles have been certified to meet OSHA safety standards. Three layers of varying density are combined for maximum cushioning and support. The entire footbed is made of open-cell polyurethane for better heat dissipation and air circulation. Wedge outsole Stitch down construction Materials & Care Premium leather upper Wedge sole Fit Portland made 503 last has a casual fit without compromising Danner's comfortable lace-to-toe construction. Fits true to size. Stylist Notes Built in the USA with a dedication to quality that goes back to 1932, the Bull Run is a utilitarian work boot with a timeless design that stays in style when you punch out. The full-grain leather upper is the perfect blend of strong and soft. Combine that with the sturdy Danner Wedge outsole and you get all-day comfort that lasts.