The Wolverine Blade FX 6 inch waterproof composite toe work boots feature Wolverine's EPX anti-fatigue technology that brings comfort closer to the foot. This technology conserves and returns energy to fight fatigue and features a footbed with a honeycomb heel to expand to absorb impact, a cushioning midsole, a lightweight stabilizer midsole, and a rubber lug outsole. All components work together to provide unrivaled support step after step. The waterproof full-grain leather upper combined with Waterproof Plus breathable membrane ensures feet stay dry while the toe bumper and heel kicker ensure long-lasting durability. This boot features CarbonMAX nanotechnology safety toe for lighter-weight, better fit, and a strong structure that meets ASTM standard F2413-11 M I/75 C75 EH. Material: Full Grain Leather, Mesh, Rubber.