Polyolefin elastomers (POE) are a range of copolymers based on metallocene catalysis utilizing butene or octene comonomers. Key characteristics of POE's are their low hardness, low density and high impact / toughness. These resins are commonly used in compounding applications where they improve the impact performance and flexibility of polypropylene or polyethylene-based compounds but they can also be used alone to produce molded or extruded parts with high flexibility and softness.