Our lightest workboot features the Powerfit comfort systems Full grain leather for comfort and a polyurethane midsole with high-rebound heel insert that provides durable cushioning and energy return. Nylon diffusion shank for torsional rigidity. Anti-microbial, contoured open-cell polyurethane footbed provides durable, resilient cushioning while molded heel cup cradles the heel. Outlast Adaptive Comfort footbed cover regulates temperature. Timberland PRO rubber dual-density outsole provides slip-resistance, oil resistance, and an abrasion resistant construction.