Defensive barriers are a modern gabion primarily used for flood control and military defense areas. They are made of a collapsible wire mesh container and heavy-duty geothermal fabric lining and are used as a blast wall against small arms fire and/or explosives. Defense Barrier; Our defense barriers are manufactured from reinforced hot dip galvanized or zinc-aluminum coated steel, providing exceptional protection and stability against various attacks. Defense Barriers are formed by attaching geothermal fabric to irons by the C ring method or by sewing the fabric according to customer demand, and thus provide strength.