Storm's Premier Line continues to be the most successful high performance line of equipment on the market. From the original El Nino and its split density technology to the Paradigm and X-Factor series with its multi-disc technology and now the performance proven Virtual series, we continue to push the limit of technology and innovation.The Invasion features the next generation of advancement in core and coverstock technology. Our first goal was to develop a strong asymmetrical design different than any other. The concept was to create contours along the RG planes to ensure a stronger preferred spin axis. We did this by developing intersecting contoured bands from the X-axis along the Y and Z axes. These bands are developed at specific arcs to maximize RG and differential values along the planes. In turn, this translates into a quicker revving core with a more defined moment of inertia or breakpoint unlike any prior design found on the market.The all new Origin core boasts a 2.48 RG value with .057 Type: Bowling Balls Size: 12 Pounds Color: Multi-Color Color Mapping: Multi-Color Coverstock: Reactive Resin Performance: Pro Performance Core Type: Asymmetric Finish: Sanded