Dunlop protection and comfort you deserve. Acifort is Dunlop's unique invention of PVC nitrile rubber and polymers. Polymers add flexibility to your boot thereby increasing comfort. Reinforced PVC for improved chemical resistance. Dual density midlayer for optimal impact absorption. SRC rated outsole for anti slip protection on any terrain. Tread wear indicators to warn when its time for replacement outsole. Full safety footwear with EN certified metatarsal and ankle protection. Safety standard ASTM F2413 18 MIC PR EH Mt.