It is a special patented compound consisting of polyvinyl chloride (PVC) and chemicals melt blended by extrusion and injected. This PVC compound is made from special and selected ingredients to achieve the specific properties which mark the PPLUS blend: extremely lightness, softness and flexibility even at low temperatures, high resistance to acids, manure, fertilisers and sprays, long-term durability. All components are in accordance with Directive 91/338/EEC regarding the prohibition of using harmful substances such as Nickel, Lead and Cadmium.