These permanent rigid PVC booms with vertical elements in expanded polystyrene are ideal for eparation in ports and calm water; they are ready to use, non-bulky and can be wound up on rolls. These materials allow for use both in high and low temperatures (-30°C - +70°C) without changing the booms' resistance to pollutants. These booms do not require maintenance, have ASTM connections in 6063 marine aluminium, lead ballast chain incorporated in the float and come in high-visibility ORANGE.