This leather NFPA firefighter boot with Vibram Fire & Ice non-slip sole is CSA ESR M ASTM certified. It offers ultimate safety thanks to its unique Metatech System 360° rigid internal metatarsal protection system, multi-directional puncture protection in the arch of the foot, integrated cushioning system at the ankle to prevent the foot from rolling, waterproof breathable eVent membrane resistant to pathogens, protective toe and anti-puncture sole in lightweight composite.